Raise your hand if you played with Legos when you were a kid. *raises hand*
Keep your hand up if you ever had your various Lego creations fight one-another. *keeps hand up*
Well, if you want some specific rules to go along with those make-believe fights, there's Mechabrick. Well, now Mechabrick Upgraded over on Indiegogo.
This new campaign primarily looks to bring new upgrade components to the game, allowing you to equip your figures with new powers and abilities. Along with the pieces, there's new rules for brick-compatible "upgrade crates" that you can place at the start of the game to give you a boost when you open them up (or blow them up when your opponent is near them).
The campaign just launched and is already over 2x funded, so it's on to stretch goals for the next 33 days.