Choose Subnautica
Choose Subnautica if you want the VR Supported side of the pairing. On Steam, it's Steam Deck Verified, so handheld play works out of the box. 177,256 Steam reviews back the pick.
Subnautica vs Mythic Ocean: Prologue
Subnautica and Mythic Ocean: Prologue 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. Subnautica (2018) is 1 year older than Mythic Ocean: Prologue (2019). Subnautica scores higher on Steam reviews (96.9% positive) than Mythic Ocean: Prologue (95.5% 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 Mythic Ocean: Prologue
Choose Mythic Ocean: Prologue if you want a Free To Play experience. On Steam, it's free to play, so the barrier to trying it is zero. Mythic Ocean: Prologue launched in 2019.
Both Subnautica and Mythic Ocean: Prologue sit in Indie and Adventure on Steam, so either pick lands in the same broad neighborhood. Steam reviews are nearly tied (96.9% vs 95.5% positive), so genre fit is the cleanest tiebreaker — scroll the table for the feature-by-feature view.
Side-by-side comparison
 Subnautica |  Mythic Ocean: Prologue | |
|---|---|---|
| Released | 2018 | 2019 |
| Genres | Indie, Adventure | Indie, Adventure, Free To Play |
| Platforms | Windows, macOS | Windows |
| Steam Deck | Deck Verified | Unrated |
| Price | 29.99 USD | Free to play |
| Steam reviews | 96.9% positive (177,256 reviews) | 95.5% positive (66 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | Unknown Worlds Entertainment | Paralune LLC |
Side by side
- Both share Indie, Adventure on Steam.
- Subnautica (2018) is 1 year older than Mythic Ocean: Prologue (2019).
- Subnautica scores higher on Steam reviews (96.9% positive) than Mythic Ocean: Prologue (95.5% positive).
- Mythic Ocean: Prologue is free; Subnautica is paid (29.99 USD).
- Subnautica is Deck Verified on Steam Deck; Mythic Ocean: Prologue has no Deck rating yet.
Subnautica vs Mythic Ocean: Prologue — FAQ
- Should I play Subnautica or Mythic Ocean: Prologue first?
- If you want chronology, Subnautica (2018) came out before Mythic Ocean: Prologue (2019). 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 Subnautica and Mythic Ocean: Prologue 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 Mythic Ocean: Prologue free?
- Yes — Mythic Ocean: Prologue is a free-to-play Steam title. Subnautica is paid (29.99 USD).
- Does Subnautica run on Steam Deck?
- Yes — Subnautica is rated Deck Verified by Valve. Mythic Ocean: Prologue doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.