Choose Senna and the Forest
Choose Senna and the Forest if it's free to play, so the barrier to trying it is zero. Senna and the Forest launched in 2019.
Senna and the Forest vs Rainbow Billy: The Book of Fears
Senna and the Forest 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. Senna and the Forest is free; Rainbow Billy: The Book of Fears is paid (Price unknown). 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 game with Custom Volume Controls, Stereo Sound, and Playable without Timed Input.
Both Senna and the Forest and Rainbow Billy: The Book of Fears sit in 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
 Senna and the Forest |  Rainbow Billy: The Book of Fears | |
|---|---|---|
| Released | 2019 | — |
| Genres | Indie, Adventure | Indie, Adventure, Casual |
| Platforms | Windows, macOS | Windows |
| Steam Deck | Unrated | Unrated |
| Price | Free to play | Price unknown |
| Steam reviews | 88.9% positive (36 reviews) | — |
| Multiplayer | Single-player only | Single-player only |
| Developers | Siddharth Sivaraman | Manavoid |
Side by side
- Both share Indie, Adventure on Steam.
- Senna and the Forest is free; Rainbow Billy: The Book of Fears is paid (Price unknown).
Senna and the Forest vs Rainbow Billy: The Book of Fears — FAQ
- Are Senna and the Forest 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.
- Is Senna and the Forest free?
- Yes — Senna and the Forest is a free-to-play Steam title. Rainbow Billy: The Book of Fears is paid (Price unknown).