Crunchy

Crunchy is a common word in roleplaying gamer slang; it has several meanings.

• A game, game system, or aspect of either which requires complex math and/or is excessively detailed. For example, the infamous GURPS vehicle creation system. Comes from the term crunch, as opposed to fluff

• A character, monster, or NPC which is notoriously hard to kill. Under this meaning, its opposite is Squishy.