Splatoon, but singleplayer, and you're a cute Pomeranian instead of a squid!
Doronko Wanko was a really fun but short game, good way to blow off steam. You get mud all over your owner's house and destroy stuff, and as the house gets dirtier you unlock more items to increase your efficiency. It's a blast! There are basic achievements too, and they are pretty easy to get while still being fun to hunt for.

Oh, and you can get a mud machine gun for maximum destruction.
Enough said. Go play this. It's free.