Choose On Key Up: A Game for Keyboards
Choose On Key Up: A Game for Keyboards if you want a Simulation game with Keyboard Only Option. On Key Up: A Game for Keyboards launched in 2022.
On Key Up: A Game for Keyboards vs S.U.M. - Slay Uncool Monsters
On Key Up: A Game for Keyboards and S.U.M. - Slay Uncool Monsters both land in Casual 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 Casual games on Steam. S.U.M. - Slay Uncool Monsters (2021) is 1 year older than On Key Up: A Game for Keyboards (2022). S.U.M. - Slay Uncool Monsters is free; On Key Up: A Game for Keyboards is paid (1.99 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 S.U.M. - Slay Uncool Monsters
Choose S.U.M. - Slay Uncool Monsters if you want an Indie and Free To Play experience. On Steam, it's free to play, so the barrier to trying it is zero. S.U.M. - Slay Uncool Monsters launched in 2021.
Both On Key Up: A Game for Keyboards and S.U.M. - Slay Uncool Monsters sit in Casual on Steam and both list Steam Leaderboards, 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
 On Key Up: A Game for Keyboards |  S.U.M. - Slay Uncool Monsters | |
|---|---|---|
| Released | 2022 | 2021 |
| Genres | Simulation, Casual | Indie, Free To Play, Casual |
| Platforms | Windows, macOS, Linux | Windows |
| Steam Deck | Unrated | Deck Verified |
| Price | 1.99 USD | Free to play |
| Steam reviews | 5 reviews | 92.6% positive (95 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | Roppy Chop Studios | Doomster Entertainment |
Side by side
- Both are Casual games on Steam.
- S.U.M. - Slay Uncool Monsters (2021) is 1 year older than On Key Up: A Game for Keyboards (2022).
- S.U.M. - Slay Uncool Monsters is free; On Key Up: A Game for Keyboards is paid (1.99 USD).
- S.U.M. - Slay Uncool Monsters is Deck Verified on Steam Deck; On Key Up: A Game for Keyboards has no Deck rating yet.
On Key Up: A Game for Keyboards vs S.U.M. - Slay Uncool Monsters — FAQ
- Should I play On Key Up: A Game for Keyboards or S.U.M. - Slay Uncool Monsters first?
- If you want chronology, S.U.M. - Slay Uncool Monsters (2021) came out before On Key Up: A Game for Keyboards (2022). 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 On Key Up: A Game for Keyboards and S.U.M. - Slay Uncool Monsters similar?
- They overlap on Casual 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.
- Is S.U.M. - Slay Uncool Monsters free?
- Yes — S.U.M. - Slay Uncool Monsters is a free-to-play Steam title. On Key Up: A Game for Keyboards is paid (1.99 USD).