It was hard to fit it in only 10K. I took the character graphics from Amstrad emulator screenshots, cleaned with Gimp and compressed using the awesome PunyPNG tool. It gave me all graphics in only 1KB.
I’d like to add much more enemies and levels. But that was not possible due to size limitations and contest deadline. So I only could make the first game level. In a near future I’ll optimize all the code to work in mobile devices too and publish it here, allowing people to create new levels and share them.
You can try it in my contest entry, clicking in Lauch button. You have to make the frog reach the top of the tower being careful with enemies and traps. Use arrow keys to move, activate elevators and doors, and space key while walking to jump. Good luck!