Choose Dimhaven - The Lost Source
Choose Dimhaven - The Lost Source if you want the DualShock Controller Support, DualSense Controller Support, and Adjustable Text Size side of the pairing. Dimhaven - The Lost Source launched in 2026.
Dimhaven - The Lost Source vs Rainbow Billy: The Book of Fears
Dimhaven - The Lost Source and Rainbow Billy: The Book of Fears both land in 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 Indie, Adventure on Steam. Dimhaven - The Lost Source is Deck Playable on Steam Deck; Rainbow Billy: The Book of Fears 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 Rainbow Billy: The Book of Fears
Choose Rainbow Billy: The Book of Fears if you want a Casual experience.
Both Dimhaven - The Lost Source and Rainbow Billy: The Book of Fears sit in Indie and Adventure on Steam and both list Custom Volume Controls, Stereo Sound, and Playable without Timed Input, 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
 Dimhaven - The Lost Source |  Rainbow Billy: The Book of Fears | |
|---|---|---|
| Released | 2026 | — |
| Genres | Indie, Adventure | Indie, Adventure, Casual |
| Platforms | Windows, macOS | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | 20.79 USD | Price unknown |
| Steam reviews | — | — |
| Multiplayer | Single-player only | Single-player only |
| Developers | Zadbox Entertainment | Manavoid |
Side by side
- Both share Indie, Adventure on Steam.
- Dimhaven - The Lost Source is Deck Playable on Steam Deck; Rainbow Billy: The Book of Fears has no Deck rating yet.
Dimhaven - The Lost Source vs Rainbow Billy: The Book of Fears — FAQ
- Are Dimhaven - The Lost Source and Rainbow Billy: The Book of Fears similar?
- They overlap on 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 Dimhaven - The Lost Source run on Steam Deck?
- Yes — Dimhaven - The Lost Source is rated Deck Playable by Valve. Rainbow Billy: The Book of Fears doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.