Choose X-17
Choose X-17 if you want an Action experience. On Steam, it's the newer release (2021) and ships with the modern feature baseline. X-17 launched in 2021.
X-17 vs LIBRARY
X-17 and LIBRARY both land in Indie 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 are Indie games on Steam. LIBRARY (2018) is 3 years older than X-17 (2021). LIBRARY scores higher on Steam reviews (96.3% positive) than X-17 (45.8% 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 LIBRARY
Choose LIBRARY if it's currently about 60% cheaper on the Steam Store. LIBRARY launched in 2018.
Both X-17 and LIBRARY sit in Indie 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
 X-17 |  LIBRARY | |
|---|---|---|
| Released | 2021 | 2018 |
| Genres | Action, Indie | Indie |
| Platforms | Windows | Windows, macOS, Linux |
| Steam Deck | Deck Unsupported | Unrated |
| Price | 4.99 USD | 1.99 USD |
| Steam reviews | 45.8% positive (48 reviews) | 96.3% positive (134 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | Panzer Gaming | Happy Snake |
Side by side
- Both are Indie games on Steam.
- LIBRARY (2018) is 3 years older than X-17 (2021).
- LIBRARY scores higher on Steam reviews (96.3% positive) than X-17 (45.8% positive).
- LIBRARY is currently ~60% cheaper on Steam than X-17 (1.99 USD vs. 4.99 USD).
- X-17 is Deck Unsupported on Steam Deck; LIBRARY has no Deck rating yet.
X-17 vs LIBRARY — FAQ
- Should I play X-17 or LIBRARY first?
- If you want chronology, LIBRARY (2018) came out before X-17 (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 X-17 and LIBRARY similar?
- They overlap on Indie 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.