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Trailers & screenshots

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About War Rats: The Rat em Up

War Rats: The Rat em Up is a hand-drawn 2D side-scrolling shooter that combines roguelite progression, tower defense and RPG elements. In a world inhabited only by rats, you lead an army across Ratopia to reclaim the land from TechnoRat, a shared consciousness of cyborg rats that seeks to consume all flesh and turn it into metal. You fight alongside your troops, manage your forces and push through enemy lines to get your Ratineer into the opposing base.

Fight through Ratopia

Battle through districts toward TechnoRat HQ and try to shut it down permanently. You collect credits, called CHz, to buy weapons and gear from the shop, and spend CHz earned during a run to upgrade your attributes after death. Enemies become stronger and stranger as you get closer to the HQ, and you can call in reinforcements at key moments to help turn a fight in your favor.

You can use 22 weapons and fight with or against over 20 rat units across 12 maps. The game also offers player customization with over 1,000 combinations of skin components, three difficulty levels, two starting weapons and friendly-fire options, including the Iron Rat setting.

Build and defend your base

The customizable Rats Nest serves as your base of operations, with rooms to access game modes and rat friends to spend time with. In battle, you can build turrets, shrines, walls, resource generators and missile launchers to counter TechnoRat's forces.

Game modes

  • Single-player campaign: Fight through the full campaign and advance toward TechnoRat HQ.
  • New Game +: Begin a lightly procedurally generated run that differs each time, keep your progression and face a greater challenge after each victory.
  • Horde Mode: Defend your base against endless waves that grow in number and strength. Enemies attack from both sides, and you have only defensive units to hold them back.
  • Skirmish Mode: Choose a map and the enemies you want to face, for practice or a standalone battle.
  • Iron Rat Mode: Enable this difficulty option to restart at level 1 if you die, while keeping the core progression loop of upgrading with what you earned during that run.

Frequently asked questions

Buy War Rats: The Rat em Up 95% cheaper than on Steam.

War Rats: The Rat em Up is available for 95% less in shops such as Kinguin, Eneba, or Royal CD Keys.

Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.

Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.

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