Choose Whimsy Koi
Choose Whimsy Koi if you want the Mouse Only Option side of the pairing.
Whimsy Koi vs One Billion Ducks
Whimsy Koi and One Billion Ducks both land in Simulation 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 Simulation games on Steam. 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 One Billion Ducks
Choose One Billion Ducks if you want the Color Alternatives, Camera Comfort, and Stereo Sound side of the pairing. One Billion Ducks launched in 2026.
Both Whimsy Koi and One Billion Ducks sit in Simulation on Steam and both list Custom Volume Controls, Playable without Timed Input, and Save Anytime, 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
 Whimsy Koi |  One Billion Ducks | |
|---|---|---|
| Released | — | 2026 |
| Genres | Simulation | Simulation |
| Platforms | Windows | Windows |
| Steam Deck | Unrated | Unrated |
| Price | Price unknown | Price unknown |
| Steam reviews | — | — |
| Multiplayer | Single-player only | Single-player only |
| Developers | Ting LY | Kukatoo |
Side by side
- Both are Simulation games on Steam.
Whimsy Koi vs One Billion Ducks — FAQ
- Are Whimsy Koi and One Billion Ducks similar?
- They overlap on Simulation 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.