Choose Mysteries Under Lake Ophelia
Choose Mysteries Under Lake Ophelia if you want an Adventure experience. On Steam, it's Steam Deck Verified, so handheld play works out of the box. Mysteries Under Lake Ophelia launched in 2021.
Mysteries Under Lake Ophelia vs Happy Pet
Mysteries Under Lake Ophelia and Happy Pet both land in Casual 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 Casual games on Steam. Mysteries Under Lake Ophelia (2021) is 4 years older than Happy Pet (2025). Happy Pet is currently ~60% cheaper on Steam than Mysteries Under Lake Ophelia (1.99 USD vs. 4.99 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 Happy Pet
Choose Happy Pet if you want an Indie and Simulation game with Adjustable Text Size, Subtitle Options, and Camera Comfort. On Steam, it's currently about 60% cheaper on the Steam Store. Happy Pet launched in 2025.
Both Mysteries Under Lake Ophelia and Happy Pet sit in Casual 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
 Mysteries Under Lake Ophelia |  Happy Pet | |
|---|---|---|
| Released | 2021 | 2025 |
| Genres | Adventure, Casual | Indie, Simulation, Casual |
| Platforms | Windows | Windows, Linux |
| Steam Deck | Deck Verified | Unrated |
| Price | 4.99 USD | 1.99 USD |
| Steam reviews | 94.3% positive (227 reviews) | — |
| Multiplayer | Single-player only | Single-player only |
| Developers | Bryce Bucher | Eragone |
Side by side
- Both are Casual games on Steam.
- Mysteries Under Lake Ophelia (2021) is 4 years older than Happy Pet (2025).
- Happy Pet is currently ~60% cheaper on Steam than Mysteries Under Lake Ophelia (1.99 USD vs. 4.99 USD).
- Mysteries Under Lake Ophelia is Deck Verified on Steam Deck; Happy Pet has no Deck rating yet.
Mysteries Under Lake Ophelia vs Happy Pet — FAQ
- Should I play Mysteries Under Lake Ophelia or Happy Pet first?
- If you want chronology, Mysteries Under Lake Ophelia (2021) came out before Happy Pet (2025). 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 Mysteries Under Lake Ophelia and Happy Pet similar?
- They overlap on Casual 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 Mysteries Under Lake Ophelia run on Steam Deck?
- Yes — Mysteries Under Lake Ophelia is rated Deck Verified by Valve. Happy Pet doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.