Choose Fell Seal: Arbiter's Mark
Choose Fell Seal: Arbiter's Mark if it's Steam Deck Verified, so handheld play works out of the box. 3,391 Steam reviews back the pick.
Fell Seal: Arbiter's Mark vs Instruments of Power
Fell Seal: Arbiter's Mark and Instruments of Power 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. Fell Seal: Arbiter's Mark (2019) is 7 years older than Instruments of Power (2026). Fell Seal: Arbiter's Mark is Deck Verified on Steam Deck; Instruments of Power has no Deck rating yet. 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 Instruments of Power
Choose Instruments of Power if you want the Custom Volume Controls, Stereo Sound, and Playable without Timed Input side of the pairing. On Steam, it's the newer release (2026) and ships with the modern feature baseline. Instruments of Power launched in 2026.
Both Fell Seal: Arbiter's Mark and Instruments of Power 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
 Fell Seal: Arbiter's Mark |  Instruments of Power | |
|---|---|---|
| Released | 2019 | 2026 |
| Genres | Strategy, Indie, RPG | Strategy, Indie, RPG |
| Platforms | Windows, macOS, Linux | Windows |
| Steam Deck | Deck Verified | Unrated |
| Price | 4.49 USD | Price unknown |
| Steam reviews | 89.1% positive (3,391 reviews) | — |
| Multiplayer | Single-player only | Single-player only |
| Developers | 6 Eyes Studio | Iron Loop Games |
Side by side
- Both share Strategy, Indie, RPG on Steam.
- Fell Seal: Arbiter's Mark (2019) is 7 years older than Instruments of Power (2026).
- Fell Seal: Arbiter's Mark is Deck Verified on Steam Deck; Instruments of Power has no Deck rating yet.
Fell Seal: Arbiter's Mark vs Instruments of Power — FAQ
- Should I play Fell Seal: Arbiter's Mark or Instruments of Power first?
- If you want chronology, Fell Seal: Arbiter's Mark (2019) came out before Instruments of Power (2026). 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 Fell Seal: Arbiter's Mark and Instruments of Power 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 Fell Seal: Arbiter's Mark run on Steam Deck?
- Yes — Fell Seal: Arbiter's Mark is rated Deck Verified by Valve. Instruments of Power doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.