Catnip Wars

Catnip Wars is a co-op tower defense game for 1–4 players. You and your friends play as scrappy Catbots defending a catnip farm from aggressive aliens bent on universal domination. Build and repair defenses, shoot back and hold the line together or alone as waves of monsters attack.

Build your farm

You place turrets, mortars, walls, catnip farms, windmills, repair stations and other structures on a hex grid. You can place them anywhere, making your layout part of your strategy, and claim new sectors to expand the farm. Farms grow catnip, while windmills generate the power that keeps turrets firing; overbuilding can cost you everything, and growing catnip too quickly may attract unwanted attention. Between waves, you can repair, salvage and rebuild, but each wave grows bigger and meaner.

Defend against monsters

The game features 14 monster types, including swarming chompers, armored giants, ranged casters and elite variants that resist small-arms fire. Waves arrive as advancing fronts, and an adaptive director grades each wave: holding the line well makes the next assault more intense. You can man the BFG (Bio-Force Gun) against big waves and work with teammates to focus down the boss Necros. When a teammate falls, the pressure increases; if the whole team goes down, the monsters rampage and breakdancing aliens take the farm.

Grow stronger

A 43-node tech tree includes an Overclock track. Earn XP across matches to unlock better turrets, tougher walls, faster repairs and new abilities. You can choose from 11+ playable Catbots, each with their own look and personality, and a crew of four who help hold the wall.

Game modes

Play solo or in online co-op with friends through Steam invites. Runs can be quick matches or long sieges, lasting 5–30 minutes; the game autosaves after every wave so you can continue later. Sandbox mode lets you choose a wave, open every sector and try any build. You can also call a self-destruct vote to end a run.

In-game text chat and Steam voice chat are built in. The game includes 100 Steam achievements, lifetime stats and global leaderboards. A ranked leaderboard is also listed among its features.