Choose Notes of Soul
Choose Notes of Soul if you want a Strategy, Massively Multiplayer, and RPG game with Multi-player, MMO, and Steam Leaderboards. On Steam, it has co-op, so you can bring a friend. Notes of Soul launched in 2019.
Notes of Soul vs C15
Notes of Soul and C15 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. Both released in 2019. C15 is currently ~80% cheaper on Steam than Notes of Soul (5.99 USD vs. 29.99 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 C15
Choose C15 if it's currently about 80% cheaper on the Steam Store. C15 launched in 2019.
Both Notes of Soul and C15 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
 Notes of Soul |  C15 | |
|---|---|---|
| Released | 2019 | 2019 |
| Genres | Action, Strategy, Indie, Adventure, Massively Multiplayer, RPG, Casual, Early Access, Racing | Action, Indie, Adventure, Early Access |
| Platforms | Windows | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | 29.99 USD | 5.99 USD |
| Steam reviews | 59.1% positive (44 reviews) | — |
| Multiplayer | Multi-player, Online Co-op, Co-op | Single-player only |
| Developers | （Hong Kong）GKD Game Studio | aDeCon Production |
Side by side
- Both share Action, Indie, Adventure on Steam.
- Both released in 2019.
- C15 is currently ~80% cheaper on Steam than Notes of Soul (5.99 USD vs. 29.99 USD).
- Notes of Soul has co-op; C15 does not.
- Notes of Soul is Deck Playable on Steam Deck; C15 has no Deck rating yet.
Notes of Soul vs C15 — FAQ
- Are Notes of Soul and C15 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 C15 have multiplayer like Notes of Soul?
- No. Notes of Soul supports multiplayer on Steam (Multi-player, Online Co-op, Co-op), while C15 is listed as single-player only.
- Does Notes of Soul run on Steam Deck?
- Yes — Notes of Soul is rated Deck Playable by Valve. C15 doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.