Free games like UNDERDEEP
Below are 10 free-to-play Steam games similar to UNDERDEEP, 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 UNDERDEEP page.
Ranked picks
- 1
Life is Strange - Episode 1
Free-to-play alternative to UNDERDEEP — no purchase or trial window. Shares Adventure with UNDERDEEP.
Episode 1 now FREE! Life is Strange is an award-winning and critically acclaimed episodic adventure game that allows the player to rewind time and affect the past, present and future.
- 2
Ultimate Custom Night
Free-to-play alternative to UNDERDEEP — no purchase or trial window. Shares Indie with UNDERDEEP.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 3
Bongo Cat
Free-to-play alternative to UNDERDEEP — no purchase or trial window. Shares Indie and Simulation with UNDERDEEP.
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?
- 4
The Murder of Sonic the Hedgehog
Free-to-play alternative to UNDERDEEP — no purchase or trial window. Shares Indie and Simulation with UNDERDEEP.
Sonic the Hedgehog...was murdered!? Get to the bottom of the mystery in this brand-new adventure!
- 5
Our Life: Beginnings & Always
Free-to-play alternative to UNDERDEEP — no purchase or trial window. Shares Indie with UNDERDEEP.
A twenty-dollar bill, four summers, fifteen years, and a one of a kind life. Create an experience that’s all your own in this near-fully customizable visual novel where you grow from childhood to adulthood with the lonely boy next door.
- 6
missed messages.
Free-to-play alternative to UNDERDEEP — no purchase or trial window. Shares Indie and Simulation with UNDERDEEP.
‘goth gf’s iPhone’ airdrops you - accept or decline? A love/horror story about life, death, & memes.
- 7
NGU IDLE
Free-to-play alternative to UNDERDEEP — no purchase or trial window. Shares Indie and Adventure with UNDERDEEP.
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!
- 8
A Date with Death
Free-to-play alternative to UNDERDEEP — no purchase or trial window. Shares Indie and Simulation with UNDERDEEP.
Fight against & romance the one hunting for your soul in A Date with Death, a romance chat simulator where you date(?) the Grim Reaper himself. Create your own character, decorate your apartment, and chat away with the charming yet dangerous Grim Reaper through text and video calls.
- 9
Crimson Engines
Free-to-play alternative to UNDERDEEP — no purchase or trial window. Shares Strategy and Indie with UNDERDEEP.
Awaken as a vampire in this dark gothic idle RPG. Rest in the crypt, harvest raw blood, refine powerful phials of vitae, and upgrade your gear in the Sanguine Sanctum. Unleash your dark arts in tactical combat, dominate the Crimson Market, and build your eternal coven.
- 10
Artesnaut
Free-to-play alternative to UNDERDEEP — no purchase or trial window. Shares Strategy and Indie with UNDERDEEP.
A hardcore medieval fantasy idle RPG, almost entirely in text. Build characters with races, jobs, and epithets. Over 1,000 items to loot. A story 93% of players rated "great." Combat and exploration are fully auto—just check your results. Now in Chapter 5, unfolding across five major updates.