diff --git a/data/ui/kofi1_d.png b/data/ui/kofi1_d.png
new file mode 100644
index 00000000..00aedc50
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diff --git a/data/ui/kofi1_h.png b/data/ui/kofi1_h.png
new file mode 100644
index 00000000..24c1636b
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diff --git a/data/ui/kofi1_i.png b/data/ui/kofi1_i.png
new file mode 100644
index 00000000..b1a554b0
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diff --git a/data/ui/kofi1_n.png b/data/ui/kofi1_n.png
new file mode 100644
index 00000000..b1a554b0
Binary files /dev/null and b/data/ui/kofi1_n.png differ
diff --git a/src/gui/MainMenuGui.hx b/src/gui/MainMenuGui.hx
index 9e819f90..8d45fadb 100644
--- a/src/gui/MainMenuGui.hx
+++ b/src/gui/MainMenuGui.hx
@@ -78,5 +78,22 @@ class MainMenuGui extends GuiImage {
 			#end
 		};
 		homebase.addChild(exitButton);
+
+		#if js
+		var kofi = new GuiButton(loadButtonImages("data/ui/kofi1"));
+		kofi.horizSizing = Left;
+		kofi.vertSizing = Top;
+		kofi.position = new Vector(473, 424);
+		kofi.extent = new Vector(143, 36);
+		kofi.pressedAction = (sender) -> {
+			#if sys
+			hxd.System.openURL("https://ko-fi.com/H2H5FRTTL");
+			#end
+			#if js
+			js.Browser.window.open("https://ko-fi.com/H2H5FRTTL");
+			#end
+		}
+		this.addChild(kofi);
+		#end
 	}
 }
diff --git a/src/gui/PlayMissionGui.hx b/src/gui/PlayMissionGui.hx
index 20d0120a..c7b8d88c 100644
--- a/src/gui/PlayMissionGui.hx
+++ b/src/gui/PlayMissionGui.hx
@@ -561,6 +561,23 @@ class PlayMissionGui extends GuiImage {
 		}
 
 		setCategoryFunc(currentCategoryStatic, false);
+
+		#if js
+		var kofi = new GuiButton(loadButtonImages("data/ui/kofi1"));
+		kofi.horizSizing = Left;
+		kofi.vertSizing = Top;
+		kofi.position = new Vector(473, 424);
+		kofi.extent = new Vector(143, 36);
+		kofi.pressedAction = (sender) -> {
+			#if sys
+			hxd.System.openURL("https://ko-fi.com/H2H5FRTTL");
+			#end
+			#if js
+			js.Browser.window.open("https://ko-fi.com/H2H5FRTTL");
+			#end
+		}
+		this.addChild(kofi);
+		#end
 	}
 
 	public override function render(scene2d:Scene) {