Very cool idea, but the controll's on a keyboard are absolutely horrible! It would be very nice to change them or to let people customize the controls!
Viewing post in Super Tilt Bro. for NES comments
Thanks for your feedback!
Controls are actually customizable, by clicking the controller images at the bottom, or the cross icon at the top.
Current default control layout pre-date the online mode, so it is made to be the less terrible option for two players on one keyboard. I guess it should be changed now that online is an option, and it is common to have only one player per computer :) What would be your most intuitive default keyboard control?