I only planned to play this game for a few minutes to check it out. I ended up spending the evening completing the whole thing.

You play as a dark lord whose castle is under attack by some annoying heroes. It is sort of like tower defense, except you summon creatures that move around the map and traps to attack the heroes. You gain experience from killing heroes and unlock new creatures and traps to summon.

There is quite a bit of variety in the hero powers, although the summoned creatures have less attack variety.

The game is real chill and I keep going back to listen to the soundtrack. First time in a long time that game music got stuck in my head.