Marble Run (itch) (FlameArchitect)

Unzip the "Speed Run.zip" file after downloading. Inside the resulting folder is a "Speed Run.exe" file, which you can run to play the game. 

To add the game to your Start Menu or taskbar, right-click the game file and press "Pin to Start" or "Pin to taskbar". To add it to your desktop, right-click the game file, press "Create shortcut", and drag the shortcut onto your desktop.