Choose The Sleep Experiment
Choose The Sleep Experiment if you want a Simulation experience. The Sleep Experiment launched in 2023.
The Sleep Experiment vs Mountains of Madness
The Sleep Experiment and Mountains of Madness both land in Action, Indie 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 Action, Indie on Steam. The Sleep Experiment (2023) is 1 year older than Mountains of Madness (2024). Mountains of Madness scores higher on Steam reviews (46.2% positive) than The Sleep Experiment (18.2% positive). 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 Mountains of Madness
Choose Mountains of Madness if you want an Adventure experience. On Steam, it's currently about 25% cheaper on the Steam Store. Mountains of Madness launched in 2024.
Both The Sleep Experiment and Mountains of Madness sit in Action and Indie 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
 The Sleep Experiment |  Mountains of Madness | |
|---|---|---|
| Released | 2023 | 2024 |
| Genres | Action, Indie, Simulation | Action, Indie, Adventure |
| Platforms | Windows, macOS | Windows |
| Steam Deck | Unrated | Unrated |
| Price | 11.99 USD | 8.99 USD |
| Steam reviews | 18.2% positive (11 reviews) | 46.2% positive (13 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | ClawsDev | Deep Dive Project |
Side by side
- Both share Action, Indie on Steam.
- The Sleep Experiment (2023) is 1 year older than Mountains of Madness (2024).
- Mountains of Madness scores higher on Steam reviews (46.2% positive) than The Sleep Experiment (18.2% positive).
- Mountains of Madness is currently ~25% cheaper on Steam than The Sleep Experiment (8.99 USD vs. 11.99 USD).
The Sleep Experiment vs Mountains of Madness — FAQ
- Should I play The Sleep Experiment or Mountains of Madness first?
- If you want chronology, The Sleep Experiment (2023) came out before Mountains of Madness (2024). 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 The Sleep Experiment and Mountains of Madness similar?
- They overlap on Action, Indie 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.