Cheat mode
Pause the game and press R(2), L, R, L(2), R, L, R(2), L, R, L(2), R, L to unlock the "Cheats" selection at the options menu. The cheat options include "Toggle Unit Spying", "Cheat Win", "Gimme $10000", "Show LZs", "Player Invulnerable", "Enable All Levels", and "Clear Fog Of War".

Cartoon mode
Create a soundtrack with the name "«<GIGGLES>»". Note: The first and last characters are the single symbols for the "double" greater than and less than signs.