Free games like Swarm Survivor: Endless Siege
Below are 9 free-to-play Steam games similar to Swarm Survivor: Endless Siege, 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 Swarm Survivor: Endless Siege page.
Ranked picks
- 1

Bongo Cat
Free-to-play alternative to Swarm Survivor: Endless Siege — no purchase or trial window. Shares Indie with Swarm Survivor: Endless Siege.
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

NGU IDLE
Free-to-play alternative to Swarm Survivor: Endless Siege — no purchase or trial window. Shares Indie with Swarm Survivor: Endless Siege.
NGU Idle is a Free To Play Idle game that's full of weird humor, tons of upgrades and hundreds of hours of content! Try out NGU Idle today and experience the joy of Numbers Going Up!
- 3

Awaria
Free-to-play alternative to Swarm Survivor: Endless Siege — no purchase or trial window. Shares Indie with Swarm Survivor: Endless Siege.
Awaria is a short game about working in haunted maintenance tunnels.
- 4

Magic Archery
Free-to-play alternative to Swarm Survivor: Endless Siege — no purchase or trial window. Shares Indie and RPG with Swarm Survivor: Endless Siege.
Train a commoner to become the greatest archer in this short incremental game! Increase your stats, gather wealth from quests, buy upgrades, and infuse your arrows with magic.
- 5

Eternal Senia
Free-to-play alternative to Swarm Survivor: Endless Siege — no purchase or trial window. Shares Indie and RPG with Swarm Survivor: Endless Siege.
Thoughts and expectations ARPG
- 6

Disfigure
Free-to-play alternative to Swarm Survivor: Endless Siege — no purchase or trial window. Shares Indie with Swarm Survivor: Endless Siege.
Disfigure is a grim-dark action rogue-like where you battle relentless hordes of monsters lurking in the shadows. Unlock powerful weapons, craft god-like builds with hundreds of upgrades, slay colossal bosses, and push your limits in intense 20–30 minute survival runs!
- 7

The Lab
Free-to-play alternative to Swarm Survivor: Endless Siege — 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!
- 8

Silly Linguine Cat Simulator Deluxe Online
Free-to-play alternative to Swarm Survivor: Endless Siege — no purchase or trial window. Shares Indie and RPG with Swarm Survivor: Endless Siege.
Silly Linguine Cat Simulator Deluxe Online is a clicker game where progression is replaced with gambling, where the goal is simply to collect the rarest silly linguine cats.
- 9

Slime Trader
Free-to-play alternative to Swarm Survivor: Endless Siege — no purchase or trial window. Shares Strategy and Indie with Swarm Survivor: Endless Siege.
Summon, place, and merge slimes to stop the larvae pouring from the pen. Collect 111 slimes across 12 grades from F to XXX, grow through runes and rebirths, trade eligible Steam Inventory items, and climb the stage leaderboard in this casual pixel-art horde defense game.