Logic gates.And sensors.And pixel blocks!
All logic gate types that are assignable to lots of things.In example,
if sensor detected that altitude is more than 3000ft., detach bombs.
For logic gates,here is a more space to create.Pixel blocks changes their color(can be chosen via paint menu) when gets logical 1.In theory you can use it for making CPU.In example,
When altitude => 3000 AND when pitch > 20 degrees then ON.
Илья Витцев commented
(off topic) Yeaaa,now i can play space quest 6 with roland mt32 sound!Yaaaay!