Choose Alien Agent X
Choose Alien Agent X if you want a Sports, Simulation, and Free To Play game with Multi-player, Online Co-op, and HDR available. On Steam, it's currently about 73% cheaper on the Steam Store. Alien Agent X launched in 2024.
Alien Agent X vs Concubine
Alien Agent X and Concubine 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. Alien Agent X (2024) is 1 year older than Concubine (2025). Concubine scores higher on Steam reviews (83.7% positive) than Alien Agent X (71.4% 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 Concubine
Choose Concubine if it's a focused single-player run rather than a multiplayer commitment. Concubine launched in 2025.
Both Alien Agent X and Concubine 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
 Alien Agent X |  Concubine | |
|---|---|---|
| Released | 2024 | 2025 |
| Genres | Action, Sports, Indie, Adventure, Simulation, RPG, Free To Play, Casual, Early Access | Action, Indie, Adventure, RPG, Early Access |
| Platforms | Windows | Windows |
| Steam Deck | Unrated | Deck Playable |
| Price | 3.99 USD | 14.99 USD |
| Steam reviews | 71.4% positive (14 reviews) | 83.7% positive (208 reviews) |
| Multiplayer | Multi-player, Online Co-op, Co-op | Single-player only |
| Developers | SGALIEN.Software.US | Upgrade Entertainment |
Side by side
- Both share Action, Indie, Adventure on Steam.
- Alien Agent X (2024) is 1 year older than Concubine (2025).
- Concubine scores higher on Steam reviews (83.7% positive) than Alien Agent X (71.4% positive).
- Alien Agent X is currently ~73% cheaper on Steam than Concubine (3.99 USD vs. 14.99 USD).
- Alien Agent X has co-op; Concubine does not.
- Concubine is Deck Playable on Steam Deck; Alien Agent X has no Deck rating yet.
Alien Agent X vs Concubine — FAQ
- Should I play Alien Agent X or Concubine first?
- If you want chronology, Alien Agent X (2024) came out before Concubine (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.
- Are Alien Agent X and Concubine 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.
- Does Concubine have multiplayer like Alien Agent X?
- No. Alien Agent X supports multiplayer on Steam (Multi-player, Online Co-op, Co-op), while Concubine is listed as single-player only.