With the release of Crush the Castle Players Pack, Crush the Castle 2 and Crush the Castle 2 Players Pack the original title became a series.
In all games players operate a trebuchet to, well, crush the castle. Castles are build from rudimentary big blocks. In the castle are a few targets: the king, some soldiers etc. Using physics the player tries to collapse the castle, killing it's inhabitants. In higher levels, castles become more complicated and more solidly build, while the player's choice of ammunition grows