diff --git a/Sources/GameWidget/Commons/Display.swift b/Sources/GameWidget/Commons/Display.swift
index fc96ff1..20093eb 100644
--- a/Sources/GameWidget/Commons/Display.swift
+++ b/Sources/GameWidget/Commons/Display.swift
@@ -13,26 +13,26 @@ public struct Display {
     public init() {}
     
     /// ``Display/Single`` の ``Display/Single/place(block:)`` により生成され, 二つの ``WidgetList`` を保持します.
-    public struct Link<T: WidgetList, U: WidgetList> {
+    public struct Link<T: WidgetListProtocol, U: WidgetListProtocol> {
         let value: (T, U)
     }
     
     /// 一つの widget から ``Display/Link`` を生成するためのラッパー.
     /// ``Display`` の ``Display/place(block:)`` により生成され, 一つの ``WidgetList`` を保持します.
-    public struct Single<T: WidgetList> {
+    public struct Single<T: WidgetListProtocol> {
         let value: T
     }
     
 }
 
 public extension Display {
-    func place<T: WidgetList>(@GroupBuilder block: () -> T) -> Display.Single<T> {
+    func place<T: WidgetListProtocol>(@GroupBuilder block: () -> T) -> Display.Single<T> {
         .init(value: block())
     }
 }
 
-extension Display.Link: Widget, WidgetList {
-    public func place<V: WidgetList>(@GroupBuilder block: () -> V) -> Display.Link<Self, V> {
+extension Display.Link: Widget, WidgetListProtocol {
+    public func place<V: WidgetListProtocol>(@GroupBuilder block: () -> V) -> Display.Link<Self, V> {
         .init(value: (self, block()))
     }
     
@@ -51,8 +51,8 @@ extension Display.Link: Widget, WidgetList {
     }
 }
 
-extension Display.Single: Widget, WidgetList {
-    public func place<U: WidgetList>(@GroupBuilder block: () -> U) -> Display.Link<Self, U> {
+extension Display.Single: Widget, WidgetListProtocol {
+    public func place<U: WidgetListProtocol>(@GroupBuilder block: () -> U) -> Display.Link<Self, U> {
         .init(value: (self, block()))
     }
     
diff --git a/Sources/GameWidget/Commons/StructuringTools/Extension.swift b/Sources/GameWidget/Commons/StructuringTools/Extension.swift
index e3b2e50..3b02d41 100644
--- a/Sources/GameWidget/Commons/StructuringTools/Extension.swift
+++ b/Sources/GameWidget/Commons/StructuringTools/Extension.swift
@@ -9,7 +9,7 @@ import SpriteKit
 
 /// widget 数を増やす際に使用します. 10 個以下の widget を内包することができます.
 /// - note: モディファイアはありませんが, メモリのオーバーヘッドがありません.
-public struct Extension<Content: WidgetList>: WidgetListElementType {
+public struct Extension<Content: WidgetListProtocol>: WidgetListElementType {
     
     var content: Content
     
diff --git a/Sources/GameWidget/Commons/StructuringTools/NodeWidget/NodeWidget.swift b/Sources/GameWidget/Commons/StructuringTools/NodeWidget/NodeWidget.swift
index 4bd1632..6dc8183 100644
--- a/Sources/GameWidget/Commons/StructuringTools/NodeWidget/NodeWidget.swift
+++ b/Sources/GameWidget/Commons/StructuringTools/NodeWidget/NodeWidget.swift
@@ -8,7 +8,7 @@
 import SpriteKit
 
 /// 10 個以下の widget を一つの widget としてまとめます. 座標, スケール, 回転を内包するコンテンツと共に調整することができます.
-public struct NodeWidget<Content: WidgetList>: Widget, ContextPresentPlugIn {
+public struct NodeWidget<Content: WidgetListProtocol>: Widget, ContextPresentPlugIn {
     public typealias Context = NodeContext
     public var content: Content
     
diff --git a/Sources/GameWidget/Commons/WidgetList/WidgetList.swift b/Sources/GameWidget/Commons/WidgetList/WidgetList.swift
new file mode 100644
index 0000000..5924b75
--- /dev/null
+++ b/Sources/GameWidget/Commons/WidgetList/WidgetList.swift
@@ -0,0 +1,196 @@
+//
+//  WidgetList.swift
+//  
+//
+//  Created by rrbox on 2023/04/09.
+//
+
+import SpriteKit
+
+// 一つの widget から RecursiveGroup を生成するためのラッパー.
+struct Single<T: WidgetListElementType>: WidgetListProtocol {
+    
+    var widget: T
+    
+    func widgetNodes(center: WidgetNotificationSystem) -> [SKNode] {
+        var result = [SKNode]()
+        self.widget.addTo(buffer: &result, center: center)
+        return result
+    }
+    
+}
+
+public struct WidgetList2<C0: WidgetListElementType, C1: WidgetListElementType>: WidgetListProtocol {
+    let widgets: (C0, C1)
+    
+    public init(_ c0: C0, _ c1: C1) {
+        self.widgets = (c0, c1)
+    }
+    
+    public func widgetNodes(center: WidgetNotificationSystem) -> [SKNode] {
+        var result = [SKNode]()
+        self.widgets.0.addTo(buffer: &result, center: center)
+        self.widgets.1.addTo(buffer: &result, center: center)
+        return result
+    }
+    
+}
+
+public struct WidgetList3<C0: WidgetListElementType, C1: WidgetListElementType, C2: WidgetListElementType>: WidgetListProtocol {
+    let widgets: (C0, C1, C2)
+    
+    public init(_ c0: C0, _ c1: C1, _ c2: C2) {
+        self.widgets = (c0, c1, c2)
+    }
+    
+    public func widgetNodes(center: WidgetNotificationSystem) -> [SKNode] {
+        var result = [SKNode]()
+        self.widgets.0.addTo(buffer: &result, center: center)
+        self.widgets.1.addTo(buffer: &result, center: center)
+        self.widgets.2.addTo(buffer: &result, center: center)
+        return result
+    }
+    
+}
+
+public struct WidgetList4<C0: WidgetListElementType, C1: WidgetListElementType, C2: WidgetListElementType, C3: WidgetListElementType>: WidgetListProtocol {
+    let widgets: (C0, C1, C2, C3)
+    
+    public init(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3) {
+        self.widgets = (c0, c1, c2, c3)
+    }
+    
+    public func widgetNodes(center: WidgetNotificationSystem) -> [SKNode] {
+        var result = [SKNode]()
+        self.widgets.0.addTo(buffer: &result, center: center)
+        self.widgets.1.addTo(buffer: &result, center: center)
+        self.widgets.2.addTo(buffer: &result, center: center)
+        self.widgets.3.addTo(buffer: &result, center: center)
+        return result
+    }
+    
+}
+
+public struct WidgetList5<C0: WidgetListElementType, C1: WidgetListElementType, C2: WidgetListElementType, C3: WidgetListElementType, C4: WidgetListElementType>: WidgetListProtocol {
+    let widgets: (C0, C1, C2, C3, C4)
+    
+    public init(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3, _ c4: C4) {
+        self.widgets = (c0, c1, c2, c3, c4)
+    }
+    
+    public func widgetNodes(center: WidgetNotificationSystem) -> [SKNode] {
+        var result = [SKNode]()
+        self.widgets.0.addTo(buffer: &result, center: center)
+        self.widgets.1.addTo(buffer: &result, center: center)
+        self.widgets.2.addTo(buffer: &result, center: center)
+        self.widgets.3.addTo(buffer: &result, center: center)
+        self.widgets.4.addTo(buffer: &result, center: center)
+        return result
+    }
+    
+}
+
+public struct WidgetList6<C0: WidgetListElementType, C1: WidgetListElementType, C2: WidgetListElementType, C3: WidgetListElementType, C4: WidgetListElementType, C5: WidgetListElementType>: WidgetListProtocol {
+    let widgets: (C0, C1, C2, C3, C4, C5)
+    
+    public init(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3, _ c4: C4, _ c5: C5) {
+        self.widgets = (c0, c1, c2, c3, c4, c5)
+    }
+    
+    public func widgetNodes(center: WidgetNotificationSystem) -> [SKNode] {
+        var result = [SKNode]()
+        self.widgets.0.addTo(buffer: &result, center: center)
+        self.widgets.1.addTo(buffer: &result, center: center)
+        self.widgets.2.addTo(buffer: &result, center: center)
+        self.widgets.3.addTo(buffer: &result, center: center)
+        self.widgets.4.addTo(buffer: &result, center: center)
+        self.widgets.5.addTo(buffer: &result, center: center)
+        return result
+    }
+}
+
+public struct WidgetList7<C0: WidgetListElementType, C1: WidgetListElementType, C2: WidgetListElementType, C3: WidgetListElementType, C4: WidgetListElementType, C5: WidgetListElementType, C6: WidgetListElementType>: WidgetListProtocol {
+    let widgets: (C0, C1, C2, C3, C4, C5, C6)
+    
+    public init(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3, _ c4: C4, _ c5: C5, _ c6: C6) {
+        self.widgets = (c0, c1, c2, c3, c4, c5, c6)
+    }
+    
+    public func widgetNodes(center: WidgetNotificationSystem) -> [SKNode] {
+        var result = [SKNode]()
+        self.widgets.0.addTo(buffer: &result, center: center)
+        self.widgets.1.addTo(buffer: &result, center: center)
+        self.widgets.2.addTo(buffer: &result, center: center)
+        self.widgets.3.addTo(buffer: &result, center: center)
+        self.widgets.4.addTo(buffer: &result, center: center)
+        self.widgets.5.addTo(buffer: &result, center: center)
+        self.widgets.6.addTo(buffer: &result, center: center)
+        return result
+    }
+}
+
+public struct WidgetList8<C0: WidgetListElementType, C1: WidgetListElementType, C2: WidgetListElementType, C3: WidgetListElementType, C4: WidgetListElementType, C5: WidgetListElementType, C6: WidgetListElementType, C7: WidgetListElementType>: WidgetListProtocol {
+    let widgets: (C0, C1, C2, C3, C4, C5, C6, C7)
+    
+    public init(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3, _ c4: C4, _ c5: C5, _ c6: C6, _ c7: C7) {
+        self.widgets = (c0, c1, c2, c3, c4, c5, c6, c7)
+    }
+    
+    public func widgetNodes(center: WidgetNotificationSystem) -> [SKNode] {
+        var result = [SKNode]()
+        self.widgets.0.addTo(buffer: &result, center: center)
+        self.widgets.1.addTo(buffer: &result, center: center)
+        self.widgets.2.addTo(buffer: &result, center: center)
+        self.widgets.3.addTo(buffer: &result, center: center)
+        self.widgets.4.addTo(buffer: &result, center: center)
+        self.widgets.5.addTo(buffer: &result, center: center)
+        self.widgets.6.addTo(buffer: &result, center: center)
+        self.widgets.7.addTo(buffer: &result, center: center)
+        return result
+    }
+}
+
+public struct WidgetList9<C0: WidgetListElementType, C1: WidgetListElementType, C2: WidgetListElementType, C3: WidgetListElementType, C4: WidgetListElementType, C5: WidgetListElementType, C6: WidgetListElementType, C7: WidgetListElementType, C8: WidgetListElementType>: WidgetListProtocol {
+    let widgets: (C0, C1, C2, C3, C4, C5, C6, C7, C8)
+    
+    public init(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3, _ c4: C4, _ c5: C5, _ c6: C6, _ c7: C7, _ c8: C8) {
+        self.widgets = (c0, c1, c2, c3, c4, c5, c6, c7, c8)
+    }
+    
+    public func widgetNodes(center: WidgetNotificationSystem) -> [SKNode] {
+        var result = [SKNode]()
+        self.widgets.0.addTo(buffer: &result, center: center)
+        self.widgets.1.addTo(buffer: &result, center: center)
+        self.widgets.2.addTo(buffer: &result, center: center)
+        self.widgets.3.addTo(buffer: &result, center: center)
+        self.widgets.4.addTo(buffer: &result, center: center)
+        self.widgets.5.addTo(buffer: &result, center: center)
+        self.widgets.6.addTo(buffer: &result, center: center)
+        self.widgets.7.addTo(buffer: &result, center: center)
+        self.widgets.8.addTo(buffer: &result, center: center)
+        return result
+    }
+}
+
+public struct WidgetList10<C0: WidgetListElementType, C1: WidgetListElementType, C2: WidgetListElementType, C3: WidgetListElementType, C4: WidgetListElementType, C5: WidgetListElementType, C6: WidgetListElementType, C7: WidgetListElementType, C8: WidgetListElementType, C9: WidgetListElementType>: WidgetListProtocol {
+    let widgets: (C0, C1, C2, C3, C4, C5, C6, C7, C8, C9)
+    
+    public init(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3, _ c4: C4, _ c5: C5, _ c6: C6, _ c7: C7, _ c8: C8, _ c9: C9) {
+        self.widgets = (c0, c1, c2, c3, c4, c5, c6, c7, c8, c9)
+    }
+    
+    public func widgetNodes(center: WidgetNotificationSystem) -> [SKNode] {
+        var result = [SKNode]()
+        self.widgets.0.addTo(buffer: &result, center: center)
+        self.widgets.1.addTo(buffer: &result, center: center)
+        self.widgets.2.addTo(buffer: &result, center: center)
+        self.widgets.3.addTo(buffer: &result, center: center)
+        self.widgets.4.addTo(buffer: &result, center: center)
+        self.widgets.5.addTo(buffer: &result, center: center)
+        self.widgets.6.addTo(buffer: &result, center: center)
+        self.widgets.7.addTo(buffer: &result, center: center)
+        self.widgets.8.addTo(buffer: &result, center: center)
+        self.widgets.9.addTo(buffer: &result, center: center)
+        return result
+    }
+}
diff --git a/Sources/GameWidget/Commons/WidgetList.swift b/Sources/GameWidget/Commons/WidgetList/WidgetListBuilder.swift
similarity index 59%
rename from Sources/GameWidget/Commons/WidgetList.swift
rename to Sources/GameWidget/Commons/WidgetList/WidgetListBuilder.swift
index 7f2dc6f..d24415f 100644
--- a/Sources/GameWidget/Commons/WidgetList.swift
+++ b/Sources/GameWidget/Commons/WidgetList/WidgetListBuilder.swift
@@ -1,5 +1,5 @@
 //
-//  Group.swift
+//  WidgetListBuilder.swift
 //  
 //
 //  Created by rrbox on 2022/07/24.
@@ -10,44 +10,34 @@ import SpriteKit
 
 @resultBuilder public struct GroupBuilder {
     
-    public static func buildBlock<C0: WidgetListElementType>(_ c0: C0) -> some WidgetList {
+    public static func buildBlock<C0: WidgetListElementType>(_ c0: C0) -> some WidgetListProtocol {
         Single(widget: c0)
     }
     
     public static func buildBlock<C0: WidgetListElementType,
-                                  C1: WidgetListElementType>(_ c0: C0, _ c1: C1) -> some WidgetList {
-        Single(widget: c0)
-            .append(c1)
+                                  C1: WidgetListElementType>(_ c0: C0, _ c1: C1) -> some WidgetListProtocol {
+        WidgetList2(c0, c1)
     }
     
     public static func buildBlock<C0: WidgetListElementType,
                                   C1: WidgetListElementType,
-                                  C2: WidgetListElementType>(_ c0: C0, _ c1: C1, _ c2: C2) -> some WidgetList {
-        Single(widget: c0)
-            .append(c1)
-            .append(c2)
+                                  C2: WidgetListElementType>(_ c0: C0, _ c1: C1, _ c2: C2) -> some WidgetListProtocol {
+        WidgetList3(c0, c1, c2)
     }
     
     public static func buildBlock<C0: WidgetListElementType,
                                   C1: WidgetListElementType,
                                   C2: WidgetListElementType,
-                                  C3: WidgetListElementType>(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3) -> some WidgetList {
-        Single(widget: c0)
-            .append(c1)
-            .append(c2)
-            .append(c3)
+                                  C3: WidgetListElementType>(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3) -> some WidgetListProtocol {
+        WidgetList4(c0, c1, c2, c3)
     }
     
     public static func buildBlock<C0: WidgetListElementType,
                                   C1: WidgetListElementType,
                                   C2: WidgetListElementType,
                                   C3: WidgetListElementType,
-                                  C4: WidgetListElementType>(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3, _ c4: C4) -> some WidgetList {
-        Single(widget: c0)
-            .append(c1)
-            .append(c2)
-            .append(c3)
-            .append(c4)
+                                  C4: WidgetListElementType>(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3, _ c4: C4) -> some WidgetListProtocol {
+        WidgetList5(c0, c1, c2, c3, c4)
     }
     
     public static func buildBlock<C0: WidgetListElementType,
@@ -55,13 +45,8 @@ import SpriteKit
                                   C2: WidgetListElementType,
                                   C3: WidgetListElementType,
                                   C4: WidgetListElementType,
-                                  C5: WidgetListElementType>(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3, _ c4: C4, _ c5: C5) -> some WidgetList {
-        Single(widget: c0)
-            .append(c1)
-            .append(c2)
-            .append(c3)
-            .append(c4)
-            .append(c5)
+                                  C5: WidgetListElementType>(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3, _ c4: C4, _ c5: C5) -> some WidgetListProtocol {
+        WidgetList6(c0, c1, c2, c3, c4, c5)
     }
     
     public static func buildBlock<C0: WidgetListElementType,
@@ -70,14 +55,8 @@ import SpriteKit
                                   C3: WidgetListElementType,
                                   C4: WidgetListElementType,
                                   C5: WidgetListElementType,
-                                  C6: WidgetListElementType>(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3, _ c4: C4, _ c5: C5, _ c6: C6) -> some WidgetList {
-        Single(widget: c0)
-            .append(c1)
-            .append(c2)
-            .append(c3)
-            .append(c4)
-            .append(c5)
-            .append(c6)
+                                  C6: WidgetListElementType>(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3, _ c4: C4, _ c5: C5, _ c6: C6) -> some WidgetListProtocol {
+        WidgetList7(c0, c1, c2, c3, c4, c5, c6)
     }
     
     public static func buildBlock<C0: WidgetListElementType,
@@ -87,15 +66,8 @@ import SpriteKit
                                   C4: WidgetListElementType,
                                   C5: WidgetListElementType,
                                   C6: WidgetListElementType,
-                                  C7: WidgetListElementType>(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3, _ c4: C4, _ c5: C5, _ c6: C6, _ c7: C7) -> some WidgetList {
-        Single(widget: c0)
-            .append(c1)
-            .append(c2)
-            .append(c3)
-            .append(c4)
-            .append(c5)
-            .append(c6)
-            .append(c7)
+                                  C7: WidgetListElementType>(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3, _ c4: C4, _ c5: C5, _ c6: C6, _ c7: C7) -> some WidgetListProtocol {
+        WidgetList8(c0, c1, c2, c3, c4, c5, c6, c7)
     }
     
     public static func buildBlock<C0: WidgetListElementType,
@@ -106,16 +78,8 @@ import SpriteKit
                                   C5: WidgetListElementType,
                                   C6: WidgetListElementType,
                                   C7: WidgetListElementType,
-                                  C8: WidgetListElementType>(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3, _ c4: C4, _ c5: C5, _ c6: C6, _ c7: C7, _ c8: C8) -> some WidgetList {
-        Single(widget: c0)
-            .append(c1)
-            .append(c2)
-            .append(c3)
-            .append(c4)
-            .append(c5)
-            .append(c6)
-            .append(c7)
-            .append(c8)
+                                  C8: WidgetListElementType>(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3, _ c4: C4, _ c5: C5, _ c6: C6, _ c7: C7, _ c8: C8) -> some WidgetListProtocol {
+        WidgetList9(c0, c1, c2, c3, c4, c5, c6, c7, c8)
     }
     
     public static func buildBlock<C0: WidgetListElementType,
@@ -127,56 +91,12 @@ import SpriteKit
                                   C6: WidgetListElementType,
                                   C7: WidgetListElementType,
                                   C8: WidgetListElementType,
-                                  C9: WidgetListElementType>(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3, _ c4: C4, _ c5: C5, _ c6: C6, _ c7: C7, _ c8: C8, _ c9: C9) -> some WidgetList {
-        Single(widget: c0)
-            .append(c1)
-            .append(c2)
-            .append(c3)
-            .append(c4)
-            .append(c5)
-            .append(c6)
-            .append(c7)
-            .append(c8)
-            .append(c9)
+                                  C9: WidgetListElementType>(_ c0: C0, _ c1: C1, _ c2: C2, _ c3: C3, _ c4: C4, _ c5: C5, _ c6: C6, _ c7: C7, _ c8: C8, _ c9: C9) -> some WidgetListProtocol {
+        WidgetList10(c0, c1, c2, c3, c4, c5, c6, c7, c8, c9)
     }
     
 }
 
-public protocol WidgetList {
+public protocol WidgetListProtocol {
     func widgetNodes(center: WidgetNotificationSystem) -> [SKNode]
 }
-
-/// 再帰可能. widget のペアです. オーバーヘッドはありません.
-public struct RecursiveGroup<T: WidgetList, U: WidgetListElementType>: WidgetList {
-    
-    var first: T
-    var second: U
-    
-    func append<V: WidgetListElementType>(_ newWidget: V) -> RecursiveGroup<Self, V> {
-        .init(first: self, second: newWidget)
-    }
-    
-    public func widgetNodes(center: WidgetNotificationSystem) -> [SKNode] {
-        var result = self.first.widgetNodes(center: center)
-        self.second.addTo(buffer: &result, center: center)
-        return result
-    }
-    
-}
-
-// 一つの widget から RecursiveGroup を生成するためのラッパー.
-struct Single<T: WidgetListElementType>: WidgetList {
-    
-    var widget: T
-    
-    func append<U: WidgetListElementType>(_ newWidget: U) -> RecursiveGroup<Self, U> {
-        .init(first: self, second: newWidget)
-    }
-    
-    func widgetNodes(center: WidgetNotificationSystem) -> [SKNode] {
-        var result = [SKNode]()
-        self.widget.addTo(buffer: &result, center: center)
-        return result
-    }
-    
-}
diff --git a/Tests/GameWidgetTests/GroupTests.swift b/Tests/GameWidgetTests/GroupTests.swift
index d66b013..917253b 100644
--- a/Tests/GameWidgetTests/GroupTests.swift
+++ b/Tests/GameWidgetTests/GroupTests.swift
@@ -10,7 +10,7 @@ import SpriteKit
 import GameWidget
 
 final class GroupTest: XCTestCase {
-    func generateNodesNameReduced<T: WidgetList>(@GroupBuilder _ list: () -> T) -> String {
+    func generateNodesNameReduced<T: WidgetListProtocol>(@GroupBuilder _ list: () -> T) -> String {
         list().widgetNodes(center: WidgetNotificationSystem()).reduce(into: "") { partialResult, node in
             guard let name = node.name else {
                 XCTFail()