Choose Hydra Slayer
Choose Hydra Slayer if you want a Strategy game with Steam Leaderboards. On Steam, it's currently about 50% cheaper on the Steam Store. Hydra Slayer launched in 2016.
Hydra Slayer vs Once upon a Dungeon II
Hydra Slayer and Once upon a Dungeon II both land in 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 are RPG games on Steam. Hydra Slayer (2016) is 8 years older than Once upon a Dungeon II (2024). Once upon a Dungeon II scores higher on Steam reviews (100% positive) than Hydra Slayer (91.9% 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 Once upon a Dungeon II
Choose Once upon a Dungeon II if you want an Action, Indie, and Early Access experience. On Steam, it's the newer release (2024) and ships with the modern feature baseline. Once upon a Dungeon II launched in 2024.
Both Hydra Slayer and Once upon a Dungeon II sit in 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
 Hydra Slayer |  Once upon a Dungeon II | |
|---|---|---|
| Released | 2016 | 2024 |
| Genres | Strategy, RPG | Action, Indie, RPG, Early Access |
| Platforms | Windows, macOS, Linux | Windows, Linux |
| Steam Deck | Unrated | Unrated |
| Price | 5.99 USD | 11.99 USD |
| Steam reviews | 91.9% positive (37 reviews) | 100% positive (13 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | Zeno Rogue | Koto Games |
Side by side
- Both are RPG games on Steam.
- Hydra Slayer (2016) is 8 years older than Once upon a Dungeon II (2024).
- Once upon a Dungeon II scores higher on Steam reviews (100% positive) than Hydra Slayer (91.9% positive).
- Hydra Slayer is currently ~50% cheaper on Steam than Once upon a Dungeon II (5.99 USD vs. 11.99 USD).
Hydra Slayer vs Once upon a Dungeon II — FAQ
- Should I play Hydra Slayer or Once upon a Dungeon II first?
- If you want chronology, Hydra Slayer (2016) came out before Once upon a Dungeon II (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 Hydra Slayer and Once upon a Dungeon II similar?
- They overlap on 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.