Tank Maniacs, a local multiplayer party game about blowing up everyone with tanks looks really fun and it's coming to Linux. I managed to get confirmation from the developer on Twitter, who mentioned a Linux build is now up for those testing it.
A game that doesn't exactly need a long description, you each pilot a strange tank and attempt to destroy everyone else. As the developer says "It's mostly about destroying your closest friends' hopes and dreams with weird tanks."—hah.

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Looks incredibly fun, a simple idea that will take some time to master. Likely a fantastic game for me to pick up and play with the mini-me to have a good laugh with. The developer has already sent over a key for testing, so once it's released I shall have some proper thoughts up on it.
Features:
- 11 wonderfully weird tanks
- 7 different maps (we are continuously adding more during the beta)
- 2 game modes
- Couch madness up to 4 players
- Support for a wide range of controllers
- Unforgiving AI bots
You can wishlist/follow it on Steam for the release that's sometime "soon", it's starting off in Early Access whilst they add in more content including maps, tanks, and game modes.