Free games like Slay All Bosses: Idle
Below are 9 free-to-play Steam games similar to Slay All Bosses: Idle, 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 Slay All Bosses: Idle page.
Ranked picks
- 1
Ultimate Custom Night
Free-to-play alternative to Slay All Bosses: Idle — no purchase or trial window.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 2
Bongo Cat
Free-to-play alternative to Slay All Bosses: Idle — no purchase or trial window. Shares Simulation with Slay All Bosses: Idle.
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?
- 3
NGU IDLE
Free-to-play alternative to Slay All Bosses: Idle — no purchase or trial window. Shares Adventure and Simulation with Slay All Bosses: Idle.
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!
- 4
Virtual Cottage
Free-to-play alternative to Slay All Bosses: Idle — no purchase or trial window. Shares Simulation and Casual with Slay All Bosses: Idle.
Virtual Cottage gives you a comfy place to rest and be productive without any distractions. Open the game, set yourself a goal and enjoy the atmosphere.
- 5
Magic Archery
Free-to-play alternative to Slay All Bosses: Idle — no purchase or trial window. Shares Simulation and RPG with Slay All Bosses: Idle.
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.
- 6
Eternal Senia
Free-to-play alternative to Slay All Bosses: Idle — no purchase or trial window. Shares RPG with Slay All Bosses: Idle.
Thoughts and expectations ARPG
- 7
The Lab
Free-to-play alternative to Slay All Bosses: Idle — 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
Cinderella Phenomenon - Otome/Visual Novel
Free-to-play alternative to Slay All Bosses: Idle — no purchase or trial window. Shares Simulation with Slay All Bosses: Idle.
The Fairytale Curse was only the beginning...
- 9
God Awe-full Clicker
Free-to-play alternative to Slay All Bosses: Idle — no purchase or trial window. Shares Strategy and Adventure with Slay All Bosses: Idle.
God Awe-Full Clicker is an Endless Dungeon Clicker/Idle game full of Greek Mythology and Epic Battles with RPG style aspects.