Choose Inout
Choose Inout if you want an Action and Indie experience. On Steam, it's currently about 50% cheaper on the Steam Store. Inout launched in 2025.
Inout vs Altarium
Inout and Altarium sit side-by-side in player discussions even though their catalogue tags only partly overlap. 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: Altarium (2024) is 1 year older than Inout (2025). Altarium scores higher on Steam reviews (65.6% positive) than Inout (60% positive). Inout is currently ~50% cheaper on Steam than Altarium (4.99 USD vs. 9.99 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 Altarium
Choose Altarium if you want an Adventure experience. Altarium launched in 2024.
Both Inout and Altarium ship Multi-player, Online Co-op, and Co-op on Steam, so either pick lands close enough that the choice is taste, not category. 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
 Inout |  Altarium | |
|---|---|---|
| Released | 2025 | 2024 |
| Genres | Action, Indie | Adventure |
| Platforms | Windows | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | 4.99 USD | 9.99 USD |
| Steam reviews | 60% positive (65 reviews) | 65.6% positive (32 reviews) |
| Multiplayer | Multi-player, Online Co-op, Co-op | Multi-player, Online Co-op, Co-op |
| Developers | Gample | Metavision Studio |
Side by side
- Altarium (2024) is 1 year older than Inout (2025).
- Altarium scores higher on Steam reviews (65.6% positive) than Inout (60% positive).
- Inout is currently ~50% cheaper on Steam than Altarium (4.99 USD vs. 9.99 USD).
- Both support cooperative play.
- Inout is Deck Playable on Steam Deck; Altarium has no Deck rating yet.
Inout vs Altarium — FAQ
- Should I play Inout or Altarium first?
- If you want chronology, Altarium (2024) came out before Inout (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.
- Do both Inout and Altarium have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Inout ships Online Co-op, Co-op; Altarium ships Online Co-op, Co-op.
- Does Inout run on Steam Deck?
- Yes — Inout is rated Deck Playable by Valve. Altarium doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.