Speedhack 2005 Rules:

Survival: Your castle must survive. When it gets to 1 HP or lower its dead, you lose. 

Classic: Game is in 320x200 resolution with < 16 colors (I think I only used 7 :))

Randomness: Computer AI is random and attacks have random elements as well.

Dichotomy: You are the benevolent human and you must attack the evil computer.

World Map: This game has no concept of location. Its an abstract representation of man's plight against evil and the bugs that thwart him.