Choose Robothorium
Choose Robothorium if you want the Multi-player, Online PvP, and PvP side of the pairing. On Steam, it's currently about 25% cheaper on the Steam Store. Robothorium launched in 2019.
Robothorium vs Sin Slayers: Reign of The 8th
Robothorium and Sin Slayers: Reign of The 8th both land in Strategy, Indie, RPG 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 Strategy, Indie, RPG on Steam. Robothorium (2019) is 5 years older than Sin Slayers: Reign of The 8th (2024). Sin Slayers: Reign of The 8th scores higher on Steam reviews (81.3% positive) than Robothorium (64.6% 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 Sin Slayers: Reign of The 8th
Choose Sin Slayers: Reign of The 8th if you want an Adventure experience. On Steam, it's the newer release (2024) and ships with the modern feature baseline. Sin Slayers: Reign of The 8th launched in 2024.
Both Robothorium and Sin Slayers: Reign of The 8th sit in Strategy, Indie, and RPG 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
 Robothorium |  Sin Slayers: Reign of The 8th | |
|---|---|---|
| Released | 2019 | 2024 |
| Genres | Strategy, Indie, RPG | Strategy, Indie, Adventure, RPG |
| Platforms | Windows, macOS, Linux | Windows, macOS, Linux |
| Steam Deck | Unrated | Deck Verified |
| Price | 14.99 USD | 19.99 USD |
| Steam reviews | 64.6% positive (99 reviews) | 81.3% positive (16 reviews) |
| Multiplayer | Multi-player | Single-player only |
| Developers | Goblinz Studio | Goonswarm Games |
Side by side
- Both share Strategy, Indie, RPG on Steam.
- Robothorium (2019) is 5 years older than Sin Slayers: Reign of The 8th (2024).
- Sin Slayers: Reign of The 8th scores higher on Steam reviews (81.3% positive) than Robothorium (64.6% positive).
- Robothorium is currently ~25% cheaper on Steam than Sin Slayers: Reign of The 8th (14.99 USD vs. 19.99 USD).
- Sin Slayers: Reign of The 8th is Deck Verified on Steam Deck; Robothorium has no Deck rating yet.
Robothorium vs Sin Slayers: Reign of The 8th — FAQ
- Should I play Robothorium or Sin Slayers: Reign of The 8th first?
- If you want chronology, Robothorium (2019) came out before Sin Slayers: Reign of The 8th (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 Robothorium and Sin Slayers: Reign of The 8th similar?
- They overlap on Strategy, Indie, RPG 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 Sin Slayers: Reign of The 8th have multiplayer like Robothorium?
- No. Robothorium supports multiplayer on Steam (Multi-player), while Sin Slayers: Reign of The 8th is listed as single-player only.