Free games like Slimeball Castle Wars
Below are 10 free-to-play Steam games similar to Slimeball Castle Wars, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Slimeball Castle Wars page.
Ranked picks
- 1
Bongo Cat
Free-to-play alternative to Slimeball Castle Wars — no purchase or trial window.
Bongo cat needs your help. Bongo cat needz more hatz!!! Every time you press a key, Bongo cat will punch your taskbar. Type, click, play, work to collect more points. Which hats will you find?
- 2
STRAFTAT
Free-to-play alternative to Slimeball Castle Wars — no purchase or trial window.
STRAFTAT is a 1v1/2v2 ONLINE first person SHOOTER with quick rounds in over 350 MAPS ; Including all WEAPONS, proximity chat and 4 players FFA.
- 3
Iron Snout
Free-to-play alternative to Slimeball Castle Wars — no purchase or trial window.
Iron Snout is a fast, colorful and brutal fighting game in which you will be helping a piglet fight for its life against hordes of wolves.
- 4
The Lab
Free-to-play alternative to Slimeball Castle Wars — no purchase or trial window.
Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!
- 5
![We Become What We Behold [Fan-Made Port] — Steam game cover](https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/1103210/header.jpg?t=1563495717)
We Become What We Behold [Fan-Made Port]
Free-to-play alternative to Slimeball Castle Wars — no purchase or trial window. Shares Casual with Slimeball Castle Wars.
a game about news cycles, vicious cycles, infinite cycles
- 6
Landfall Archives
Free-to-play alternative to Slimeball Castle Wars — no purchase or trial window. Shares Strategy with Slimeball Castle Wars.
Break into the Landfall Archives to steal and play previously unreleased games, demos, interactive slide shows, and even an unreleased version of Totally Accurate Battle Simulator from 2017!
- 7
Electoral Carnage
Free-to-play alternative to Slimeball Castle Wars — no purchase or trial window. Shares Early Access with Slimeball Castle Wars.
Electoral Carnage is an absurd 2D fighting game featuring America's most famous (and infamous) politicians. If you don't download it you hate America. Also JFK can assassinate himself. What more do you need to know?
- 8
Meteor 60 Seconds!
Free-to-play alternative to Slimeball Castle Wars — no purchase or trial window.
Meteor 60 seconds! is a simple, fun, comic-like action game that simulates your life if there were a meteor heading towards Earth and you had 60 seconds to live. Do anything you want to do with your last 60 seconds, even if it's illegal! What about planting an apple tree?
- 9
坍塌世界
Free-to-play alternative to Slimeball Castle Wars — no purchase or trial window. Shares Strategy with Slimeball Castle Wars.
"Collapsing World" is an innovative tower defense game blending deck-building and roguelike mechanics. Recruit unique companions, craft powerful skill decks, and tackle randomized stages. Deep strategy breaks the traditional TD mold—every run is a fresh challenge!
- 10
Age of Empires III: Definitive Edition
Free-to-play alternative to Slimeball Castle Wars — no purchase or trial window. Shares Strategy with Slimeball Castle Wars.
Age of Empires III: Definitive Edition offers players a trial of this historical single & multiplayer RTS experience. *Note: To unlock all features of the game please see the “Base Game” product.