Choose Mars Underground
Choose Mars Underground if you want a Free To Play experience. On Steam, it's free to play, so the barrier to trying it is zero. Mars Underground launched in 2019.
Mars Underground vs One More Flight
Mars Underground and One More Flight both land in Indie, Adventure on Steam, which is why they keep getting compared. The comparison below is built from each game's Steam metadata — release year, genres, categories, Steam Deck status, price, and review score — refreshed daily by imho.run's scraper. Headline differences: Both share Indie, Adventure on Steam. Mars Underground is free; One More Flight is paid (Price unknown). Mars Underground is Deck Playable on Steam Deck; One More Flight has no Deck rating yet. No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.
Which should you pick?
Choose One More Flight
Choose One More Flight if you want the Custom Volume Controls and Playable without Timed Input side of the pairing.
Both Mars Underground and One More Flight sit in Indie and Adventure on Steam, so either pick lands in the same broad neighborhood. Use the side-by-side table for the feature view, or follow the "Games like" links below to see ranked alternatives for either title.
Side-by-side comparison
 Mars Underground |  One More Flight | |
|---|---|---|
| Released | 2019 | — |
| Genres | Indie, Adventure, Free To Play | Indie, Adventure |
| Platforms | Windows, Linux | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | Free to play | Price unknown |
| Steam reviews | 95.2% positive (42 reviews) | — |
| Multiplayer | Single-player only | Single-player only |
| Developers | Matt Sanderson | Nyro Interactive |
Side by side
- Both share Indie, Adventure on Steam.
- Mars Underground is free; One More Flight is paid (Price unknown).
- Mars Underground is Deck Playable on Steam Deck; One More Flight has no Deck rating yet.
Mars Underground vs One More Flight — FAQ
- Are Mars Underground and One More Flight similar?
- They overlap on Indie, Adventure on Steam, so the catalogue groups them together — but "similar" depends on the specific mechanics. Use the genre + category rows above to decide whether the overlap matches what drew you to the one you've already played.
- Is Mars Underground free?
- Yes — Mars Underground is a free-to-play Steam title. One More Flight is paid (Price unknown).
- Does Mars Underground run on Steam Deck?
- Yes — Mars Underground is rated Deck Playable by Valve. One More Flight doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.