Choose UnderMine
Choose UnderMine if you want an Indie, Adventure, and RPG experience. On Steam, it's Steam Deck Verified, so handheld play works out of the box. 4,358 Steam reviews back the pick.
UnderMine vs Polygon War
UnderMine and Polygon War both land in Action 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 are Action games on Steam. UnderMine (2020) is 6 years older than Polygon War (2026). Polygon War is currently ~90% cheaper on Steam than UnderMine (1.99 USD vs. 19.99 USD). 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 Polygon War
Choose Polygon War if you want an Early Access experience. On Steam, it's currently about 90% cheaper on the Steam Store. Polygon War launched in 2026.
Both UnderMine and Polygon War sit in Action 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
 UnderMine |  Polygon War | |
|---|---|---|
| Released | 2020 | 2026 |
| Genres | Action, Indie, Adventure, RPG | Action, Early Access |
| Platforms | Windows, macOS, Linux | Windows, macOS |
| Steam Deck | Deck Verified | Unrated |
| Price | 19.99 USD | 1.99 USD |
| Steam reviews | 89.8% positive (4,358 reviews) | — |
| Multiplayer | Single-player only | Single-player only |
| Developers | Thorium | 4R |
Side by side
- Both are Action games on Steam.
- UnderMine (2020) is 6 years older than Polygon War (2026).
- Polygon War is currently ~90% cheaper on Steam than UnderMine (1.99 USD vs. 19.99 USD).
- UnderMine is Deck Verified on Steam Deck; Polygon War has no Deck rating yet.
UnderMine vs Polygon War — FAQ
- Should I play UnderMine or Polygon War first?
- If you want chronology, UnderMine (2020) came out before Polygon War (2026). If neither is a sequel to the other, order doesn't really matter — start with whichever fits your current mood, since both share enough on Steam to make either a reasonable opener.
- Are UnderMine and Polygon War similar?
- They overlap on Action 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.
- Does UnderMine run on Steam Deck?
- Yes — UnderMine is rated Deck Verified by Valve. Polygon War doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.