I like the idea of building capturing! But my suggestion is: - implement the grepmasters suggestion, - all except economic buildings can be captured, so once you kill all military force of one player (including towers containing units) you get all his buildings except economic buildings (basically he becomes your slave) until he pays a predefined amount of resources, he can't build any military in the time while he's a slave, once he pays the resource he gets his buildings back and has a peace treat of a predefined period of time to get back on his feet I know it's a bit too much to ask for but that would be the most realistic way I think. Once the soldiers of one village are killed usually the rest become enslaved. However, even if it remains as it is (piercing soldiers can destroy buildings, no capturing) is fine for me, and majority of the players I think because most RTS games work that way.