Pong recompiles its own source code every frame

Jonah Uellenberg won the Ping Pong Prize at the 29th International Obfuscated C Code Contest with a Pong version that recompiles its own source code on every frame. Each run prints the C source for the next frame, embedding the display and game state. Uellenberg wrote the code in his own language, Insert, whose compiler generated the obfuscated C.