Read this if the game doesn't load.
Go Fullscreen
Instruction to Play G-Switch 2
This is the newer version of G-Switch 1 Game, but it comes with almost the same options. However, you can now flip pressing any key of the keyboard. The Endless option of the game allows playing without interruption. You will never die in endless mode. There is also multiplayer option.
The latest version; G-Switch 3