Choose PLANET ALPHA
Choose PLANET ALPHA if you want an Action experience. PLANET ALPHA launched in 2018.
PLANET ALPHA vs Alien X
PLANET ALPHA and Alien X 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. PLANET ALPHA (2018) is 3 years older than Alien X (2021). Alien X is currently ~95% cheaper on Steam than PLANET ALPHA (0.49 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 Alien X
Choose Alien X if you want a Simulation and Casual experience. On Steam, it's currently about 95% cheaper on the Steam Store. Alien X launched in 2021.
Both PLANET ALPHA and Alien X sit in 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
 PLANET ALPHA |  Alien X | |
|---|---|---|
| Released | 2018 | 2021 |
| Genres | Action, Indie, Adventure | Indie, Adventure, Simulation, Casual |
| Platforms | Windows | Windows |
| Steam Deck | Deck Unsupported | Unrated |
| Price | 9.99 USD | 0.49 USD |
| Steam reviews | 75.1% positive (261 reviews) | 4 reviews |
| Multiplayer | Single-player only | Single-player only |
| Developers | Planet Alpha ApS | LTZinc |
Side by side
- Both share Indie, Adventure on Steam.
- PLANET ALPHA (2018) is 3 years older than Alien X (2021).
- Alien X is currently ~95% cheaper on Steam than PLANET ALPHA (0.49 USD vs. 9.99 USD).
- PLANET ALPHA is Deck Unsupported on Steam Deck; Alien X has no Deck rating yet.
PLANET ALPHA vs Alien X — FAQ
- Should I play PLANET ALPHA or Alien X first?
- If you want chronology, PLANET ALPHA (2018) came out before Alien X (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 PLANET ALPHA and Alien X 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.