You play as Otto Von Steamingberg, who is a steam powered gentleman thief. He enters the castle of a mad scientist to run, jump and grab any treasure the doctor has left lying around for some reason. Perhaps that's why he is called mad? Otto needs to keep an eye on his steam meter though, if it runs empty, he and his plans run out of, well, steam.
Use up and down arrow to jump and stop/start moving, change these to W and S in Options menu.
P to pause the game
R to Restart the current Stage
Esc to return to menu
+ and - to adjust volume and 0 to mute.