Yet Another Zombie Defense HD is currently free on Steam for a limited time - it normally costs €3.99.

Yet Another Zombie Defense HD is a top-down arcade zombie shooter with tactical elements: build up your base and defenses during the day, then fend off increasingly tough zombie hordes at night. It supports local and online co-op for up to four players.

There’s no native Linux version, but according to ProtonDB the game runs flawlessly through Proton, rated Platinum.

MAIN FEATURES:

Local and online co-op up to four players - slaying monsters alone is fun, but with your mates? Up to 4 times better!

Mount your favorite firearms on automated turrets and set up traps - they’re not expecting that.

Guns, guns, guns… and more! Choose from variety of weapons - shotguns, rocket launchers, flamethrowers and much more to choose from.

Pick your favorite game mode:

• Defense,
• Endless,
• Deathmatch.

Steam Workshop - create your own characters and levels - play just the way YOU like it!

Compete with others and own the Leaderboards.

Source: Steam