Choose ZERO Sievert
Choose ZERO Sievert if it's Steam Deck Verified, so handheld play works out of the box. 7,696 Steam reviews back the pick.
ZERO Sievert vs Iridio
ZERO Sievert and Iridio both land in Action, 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 Action, Indie, Adventure on Steam. ZERO Sievert (2024) is 1 year older than Iridio (2025). Iridio scores higher on Steam reviews (92% positive) than ZERO Sievert (85.8% positive). 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 Iridio
Choose Iridio if you want an Early Access game with Subtitle Options, Camera Comfort, and Stereo Sound. On Steam, it carries the stronger Steam consensus at 92% positive across 100 reviews.
Both ZERO Sievert and Iridio sit in Action, 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
 ZERO Sievert |  Iridio | |
|---|---|---|
| Released | 2024 | 2025 |
| Genres | Action, Indie, Adventure | Action, Indie, Adventure, Early Access |
| Platforms | Windows | Windows |
| Steam Deck | Deck Verified | Unrated |
| Price | 19.99 USD | 19.99 USD |
| Steam reviews | 85.8% positive (7,696 reviews) | 92% positive (100 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | CABO Studio | KR Games |
Side by side
- Both share Action, Indie, Adventure on Steam.
- ZERO Sievert (2024) is 1 year older than Iridio (2025).
- Iridio scores higher on Steam reviews (92% positive) than ZERO Sievert (85.8% positive).
- Iridio is currently ~0% cheaper on Steam than ZERO Sievert (19.99 USD vs. 19.99 USD).
- ZERO Sievert is Deck Verified on Steam Deck; Iridio has no Deck rating yet.
ZERO Sievert vs Iridio — FAQ
- Which is better, ZERO Sievert or Iridio?
- On Steam reviews Iridio scores higher (92% positive) than ZERO Sievert (85.8% positive). Both have enough reviews to trust the signal, so for players using reviews alone, Iridio is the safer pick. Genre fit still matters — check the side-by-side table for the categories each game lands in.
- Should I play ZERO Sievert or Iridio first?
- If you want chronology, ZERO Sievert (2024) came out before Iridio (2025). 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 ZERO Sievert and Iridio similar?
- They overlap on Action, 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.
- Does ZERO Sievert run on Steam Deck?
- Yes — ZERO Sievert is rated Deck Verified by Valve. Iridio doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.