Free games like Submarine Titans
Below are 9 free-to-play Steam games similar to Submarine Titans, 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 Titans page.
Ranked picks
- 1
Ultimate Custom Night
Free-to-play alternative to Submarine Titans — no purchase or trial window.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 2
ENA: Dream BBQ
Free-to-play alternative to Submarine Titans — no purchase or trial window.
Experience surreal environments and inexplicable characters as ENA in a new wild world.
- 3
missed messages.
Free-to-play alternative to Submarine Titans — no purchase or trial window. Shares Simulation with Submarine Titans.
‘goth gf’s iPhone’ airdrops you - accept or decline? A love/horror story about life, death, & memes.
- 4
The Lab
Free-to-play alternative to Submarine Titans — 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!
- 5
Z.A.T.O. // I Love the World and Everything In It
Free-to-play alternative to Submarine Titans — no purchase or trial window.
USSR, 1986. A girl goes missing in the closed city of Vorkuta-5, yet not a soul seems to be concerned. Uncover the mystery behind her disappearance and transmit your signal to the universe.
- 6
Higurashi When They Cry Hou - Ch.1 Onikakushi
Free-to-play alternative to Submarine Titans — no purchase or trial window.
Higurashi When They Cry is a sound novel. The music, backgrounds and characters work together to create a world that is the stage of a novel for the user to read. They laugh and cry and get angry. The user takes the point of view of the protagonist to experience the story.
- 7
Cinderella Phenomenon - Otome/Visual Novel
Free-to-play alternative to Submarine Titans — no purchase or trial window. Shares Simulation with Submarine Titans.
The Fairytale Curse was only the beginning...
- 8
Tails Noir: Prologue
Free-to-play alternative to Submarine Titans — no purchase or trial window.
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.
- 9
Nuclear Sub: Prologue
Free-to-play alternative to Submarine Titans — 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