Auxiliary Subsystems (Easy) uses the theme Animals. Each word is 3 letters long.
Auxiliary Subsystems
- pig
- dog
- cat
- rat
- cow
Security Kernel (Medium) uses the theme Metals. Each word is 6 letters long.
Security Kernel
- copper
- nickel
- cobalt
- silver
- bronze
Self-Destruct Protocol (Hard) uses the theme Games. Each word is 9 letters long.
Self-Destruct Protocol
- blackjack
- billiards
- checkmate
- tictactoe
- solitaire