Choose Doorways: Old Prototype
Choose Doorways: Old Prototype if you want a Free To Play experience. On Steam, it's free to play, so the barrier to trying it is zero. Doorways: Old Prototype launched in 2016.
Doorways: Old Prototype vs Horizon's Mirage
Doorways: Old Prototype and Horizon's Mirage 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. Doorways: Old Prototype (2016) is 8 years older than Horizon's Mirage (2024). Doorways: Old Prototype is free; Horizon's Mirage is paid (2.99 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 Horizon's Mirage
Choose Horizon's Mirage if it's the newer release (2024) and ships with the modern feature baseline. Horizon's Mirage launched in 2024.
Both Doorways: Old Prototype and Horizon's Mirage 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
 Doorways: Old Prototype |  Horizon's Mirage | |
|---|---|---|
| Released | 2016 | 2024 |
| Genres | Action, Indie, Adventure, Free To Play | Action, Indie, Adventure |
| Platforms | Windows, macOS, Linux | Windows |
| Steam Deck | Unrated | Unrated |
| Price | Free to play | 2.99 USD |
| Steam reviews | 82.3% positive (305 reviews) | 3 reviews |
| Multiplayer | Single-player only | Single-player only |
| Developers | Saibot Studios | High Performance Games |
Side by side
- Both share Action, Indie, Adventure on Steam.
- Doorways: Old Prototype (2016) is 8 years older than Horizon's Mirage (2024).
- Doorways: Old Prototype is free; Horizon's Mirage is paid (2.99 USD).
Doorways: Old Prototype vs Horizon's Mirage — FAQ
- Should I play Doorways: Old Prototype or Horizon's Mirage first?
- If you want chronology, Doorways: Old Prototype (2016) came out before Horizon's Mirage (2024). 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 Doorways: Old Prototype and Horizon's Mirage 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.
- Is Doorways: Old Prototype free?
- Yes — Doorways: Old Prototype is a free-to-play Steam title. Horizon's Mirage is paid (2.99 USD).