Cubi Kill 4
Cubi Kill 4 is a game where you need to torture and kill a player to gain the points to clear the level. As this is a multi-level game, you'll need to complete the task given in order to unlock another level. Every level has its own way to torturing and killing the player.
And as this game includes killing and bloodshed, it is not recommended for the faint-hearted and for children.
How to play:
There's no particular way to play this game. For example, there's some level where you only need to use your mouse for picking up the object and shot at the player to kill it by clicking the mouse.
Whereas at some level you need to change your direction by pressing Left and Right key to move your player accordingly while falling.
So there are no fixed controls.