Free games like Nuclear Design Bureau
Below are 8 free-to-play Steam games similar to Nuclear Design Bureau, 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 Nuclear Design Bureau page.
Ranked picks
- 1
Ultimate Custom Night
Free-to-play alternative to Nuclear Design Bureau — no purchase or trial window. Shares Indie with Nuclear Design Bureau.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 2
Steam Engine Simulator
Free-to-play alternative to Nuclear Design Bureau — no purchase or trial window. Shares Simulation with Nuclear Design Bureau.
The Steam Engine Simulator shown on AngeTheGreat's YouTube channel.
- 3
Disfigure
Free-to-play alternative to Nuclear Design Bureau — no purchase or trial window. Shares Indie with Nuclear Design Bureau.
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!
- 4
Paper Lily - Chapter 1
Free-to-play alternative to Nuclear Design Bureau — no purchase or trial window. Shares Indie with Nuclear Design Bureau.
Paper Lily is an RPG horror game in which you can solve puzzles in different ways. Explore a hidden world, meet strange characters, and guide Lacie as she attempts to find answers about her unusual condition.
- 5
The Lab
Free-to-play alternative to Nuclear Design Bureau — 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!
- 6
Project Kat - Paper Lily Prologue
Free-to-play alternative to Nuclear Design Bureau — no purchase or trial window. Shares Indie with Nuclear Design Bureau.
Project Kat is a short, unconventional RPG horror game in which there is always another way. Solve puzzles, make friends (or not), and guide Kat as she attempts to uncover the mystery behind a strange golden letter.
- 7
Cube Escape: Paradox
Free-to-play alternative to Nuclear Design Bureau — no purchase or trial window. Shares Indie with Nuclear Design Bureau.
The tenth Cube Escape follows the story of detective Dale Vandermeer who finds himself trapped in two different universes and needs to escape. Cube Escape: Paradox will be released together with the accompanying Paradox: A Rusty Lake Film.
- 8
Tails Noir: Prologue
Free-to-play alternative to Nuclear Design Bureau — no purchase or trial window. Shares Indie with Nuclear Design Bureau.
Tails Noir: Prologue is the first act of a post-noir narrative adventure. Become raccoon private eye Howard Lotor and explore dystopian Vancouver inhabited by animals as you uncover a deeply personal story of change and transformation.