Wiki

Switch	Effect
/keepaspectratio	Alaways keep the aspect ratio of the game
/load <N>	Directly load the save-game slot with the number N after game start
/nodigisound	Disable sound
/noinputgrab	Disable initial input grabbing (can be toggled by pressing CTRL + g)
/nomovie	Do not play any in-game movies
/window	Start game in windowed mode