Blockland at first glance appears to be a childs lego game, but honestly it isn't, the game has things like blood and gore, and pedobear's face as a customizable option.
The game is hard to explain, so here's some videos of blockland!
(when your creations are blown up in blockland, the blocks lost respawn after about 30 seconds)
I've had this game for about 2 years now, and its really good game!
you can buy it HALF-OFF for $9.95!!