Choose Don't open the doors!
Choose Don't open the doors! if it's currently about 27% cheaper on the Steam Store. Don't open the doors! launched in 2016.
Don't open the doors! vs Ocean's Heart
Don't open the doors! and Ocean's Heart 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. Don't open the doors! (2016) is 5 years older than Ocean's Heart (2021). Ocean's Heart scores higher on Steam reviews (81.1% positive) than Don't open the doors! (76.9% 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 Ocean's Heart
Choose Ocean's Heart if it's the newer release (2021) and ships with the modern feature baseline. Ocean's Heart launched in 2021.
Both Don't open the doors! and Ocean's Heart 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
 Don't open the doors! |  Ocean's Heart | |
|---|---|---|
| Released | 2016 | 2021 |
| Genres | Action, Indie, Adventure, RPG | Action, Indie, Adventure, RPG |
| Platforms | Windows, macOS | Windows |
| Steam Deck | Deck Playable | Deck Playable |
| Price | 10.99 USD | 14.99 USD |
| Steam reviews | 76.9% positive (78 reviews) | 81.1% positive (684 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | Anton Riot and Co | Max Mraz |
Side by side
- Both share Action, Indie, Adventure on Steam.
- Don't open the doors! (2016) is 5 years older than Ocean's Heart (2021).
- Ocean's Heart scores higher on Steam reviews (81.1% positive) than Don't open the doors! (76.9% positive).
- Don't open the doors! is currently ~27% cheaper on Steam than Ocean's Heart (10.99 USD vs. 14.99 USD).
- Both are Deck Playable.
Don't open the doors! vs Ocean's Heart — FAQ
- Should I play Don't open the doors! or Ocean's Heart first?
- If you want chronology, Don't open the doors! (2016) came out before Ocean's Heart (2021). 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 Don't open the doors! and Ocean's Heart 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.