Free games like Submarine War
Below are 9 free-to-play Steam games similar to Submarine War, 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 Submarine War page.
Ranked picks
- 1
Ultimate Custom Night
Free-to-play alternative to Submarine War — no purchase or trial window. Shares Action and Indie with Submarine War.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 2
ENA: Dream BBQ
Free-to-play alternative to Submarine War — no purchase or trial window. Shares Indie and Adventure with Submarine War.
Experience surreal environments and inexplicable characters as ENA in a new wild world.
- 3
Indigo Park: Chapter 1
Free-to-play alternative to Submarine War — no purchase or trial window. Shares Action and Indie with Submarine War.
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.
- 4
Counter-Strike:Global Offensive
Free-to-play alternative to Submarine War — no purchase or trial window. Shares Action with Submarine War.
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.).
- 5
The Lab
Free-to-play alternative to Submarine War — 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 Submarine War — no purchase or trial window. Shares Action and Simulation with Submarine War.
『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 Submarine War — no purchase or trial window. Shares Action and Strategy with Submarine War.
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 Submarine War — no purchase or trial window. Shares Action and Indie with Submarine War.
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
Nuclear Sub: Prologue
Free-to-play alternative to Submarine War — no purchase or trial window.
The Prologue is just part of the gameplay that awaits you in the full version of the game. A realistic nuclear submarine simulator will allow you to take command of your crew and battle your fiercest enemies. Arm yourself with missiles, dive into the ocean and fight for your country