Great game, good fun! I´d only suggest to either add gamepad support or have the keys configurable. Z&X don´t work well on the German keyboad layout.
Looks like my gamepad had a fault; a new one is working fine with Pepper Pengui. Still an option to reconfigure keys would be nice.
Thanks for your comment! I forgot to put on the page that "WASD" + CTRL and SPACE are also alternative controls.
