Just my own two cents
My entry for the Ludum Dare 32 - An unconventional Weapon
Use a two-cent piece to get through the levels and throw enemies into the spikes.
Game Length: ~5 minutes
Source Code here: https://github.com/NekuSoul/Just-my-own-two-cents
Use the Web-Player or download the game for your OS.
-> Mac and Linux versions are untested<-