Free games like Thunder Training Ground
Below are 9 free-to-play Steam games similar to Thunder Training Ground, 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 Thunder Training Ground page.
Ranked picks
- 1
Ultimate Custom Night
Free-to-play alternative to Thunder Training Ground — no purchase or trial window. Shares Action and Indie with Thunder Training Ground.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 2
Indigo Park: Chapter 1
Free-to-play alternative to Thunder Training Ground — no purchase or trial window. Shares Action and Indie with Thunder Training Ground.
Explore the abandoned childhood wonder of Indigo Park! Guided by Rambley the Raccoon, help restore power to the destroyed amusement park while you run from the reason it shut down.
- 3
Counter-Strike:Global Offensive
Free-to-play alternative to Thunder Training Ground — no purchase or trial window. Shares Action with Thunder Training Ground.
Counter-Strike:Global Offensive (CS:GO) expands upon the team-based action gameplay that it pioneered when it was launched over 2 decades ago. CS:GO features new maps, characters, weapons, and game modes, and delivers updated versions of the classic CS content (de_dust2, etc.).
- 4
The Expendabros
Free-to-play alternative to Thunder Training Ground — no purchase or trial window. Shares Action and Indie with Thunder Training Ground.
The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.
- 5
The Lab
Free-to-play alternative to Thunder Training Ground — 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
DORONKO WANKO
Free-to-play alternative to Thunder Training Ground — no purchase or trial window. Shares Action and Simulation with Thunder Training Ground.
『DORONKO WANKO』 is a DORONKO Action Game. In this game, You can become a cute, innocent Pomeranian, make your master's home messy and dirty. "Will the master be angry with me?" Don't worry. Because you are a sweet doggie.
- 7
Landfall Archives
Free-to-play alternative to Thunder Training Ground — no purchase or trial window. Shares Action and Indie with Thunder Training Ground.
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!
- 8
SuchArt: Creative Space
Free-to-play alternative to Thunder Training Ground — no purchase or trial window. Shares Action and Indie with Thunder Training Ground.
Paint on any surfaces with numerous tools in Creative Space — a free sandbox version of SuchArt: Genius Artist Simulator. Create masterpieces, complete commissions, and decorate your studio in the most advanced artist sim!
- 9
Rise of Flight United
Free-to-play alternative to Thunder Training Ground — no purchase or trial window. Shares Simulation with Thunder Training Ground.
Pilot legendary aircraft of the early years of aviation, French Spad 13, German Albatros D.Va and Russian built Nieuport 17, in the free-to-play Rise of Flight United! This WWI aviation sim that has something for every flight-sim fan, from single player skirmish and career to multiplayer dogfights, but one thing is for certain, the...