Free games like Deckmon21
Below are 9 free-to-play Steam games similar to Deckmon21, 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 Deckmon21 page.
Ranked picks
- 1
Helltaker
Free-to-play alternative to Deckmon21 — no purchase or trial window. Shares Indie and Adventure with Deckmon21.
Helltaker is a short game about sharply dressed demon girls.
- 2
Bongo Cat
Free-to-play alternative to Deckmon21 — no purchase or trial window. Shares Indie with Deckmon21.
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?
- 3
Sheepy: A Short Adventure
Free-to-play alternative to Deckmon21 — no purchase or trial window. Shares Indie and Adventure with Deckmon21.
A Short Handcrafted Pixel Art Platformer that follows Sheepy, an abandoned plushy brought to life. Sheepy: A Short Adventure is the first short game from MrSuicideSheep.
- 4
NGU IDLE
Free-to-play alternative to Deckmon21 — no purchase or trial window. Shares Indie and Adventure with Deckmon21.
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!
- 5
Travellin Cats in Paris
Free-to-play alternative to Deckmon21 — no purchase or trial window. Shares Indie with Deckmon21.
Find 100 cats hidden in Paris, France in this cute hand-drawn hidden object game by Travellin Cats - the original viral hidden cat game creator!
- 6
Grimm's Hollow
Free-to-play alternative to Deckmon21 — no purchase or trial window. Shares Indie and Adventure with Deckmon21.
A spooky, freeware RPG where you search the afterlife for your brother. Reap ghosts with your scythe, explore haunted caves, and eat ghostly treats on your journey through death.
- 7
The Expendabros
Free-to-play alternative to Deckmon21 — no purchase or trial window. Shares Indie and Adventure with Deckmon21.
The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.
- 8
Star Fetchers
Free-to-play alternative to Deckmon21 — no purchase or trial window. Shares Indie and Adventure with Deckmon21.
The introduction to a wild ride with gangsters and deep state conspiracy theories
- 9
无怀葛天
Free-to-play alternative to Deckmon21 — no purchase or trial window. Shares Strategy with Deckmon21.
Wu Huai Ge Tian is a strategy card battler rooted in Eastern mythology. Place cards on a 4×6 grid, flip and capture enemy cards, harness the Five Elements, and chain numbers to turn the tide. Five races, unique card skills, deck building, and ranked play await. Every move matters.