Green Mountain (Reupload)

Green Mountain is an old Sonic horror game.

When the game shows up it will not be in full screen and it won't allow you to go into full screen. If you want to go into full screen you press and hold 'alt' and you press 'enter' and the game will go into full screen. If you want to get the game back to a small screen you press and hold 'alt' and you press 'enter' and then the game will go back to a small screen.