# The Moonstone Equation Summer DB entity ID: 3513121b\-6e73\-42c2\-a2fc\-56edf1cf97ed Steam App ID: 589100 Scientists love a good mystery The Moonstone Equation is a single player puzzle/platform game about science and curiosity presented in a modern pixel art style\. It's set in and around a remote hilltop research facility built specifically to investigate some mysterious inscriptions carved into pieces of moon rock found buried within the hillside\. The player guides our protagonist Alice as she arrives at the facility and starts to live and work with the various scientists theorists and oddballs that already call this place home\. The Moonstone equation draws its design inspiration from games like Fez, Monument Valley, The Talos Principle and Ico\. The Player is free to explore and investigate a world full of puzzles as they like, discovering \(and shaping\) the narrative as they go\. With very little threat and no 'enemies'\. It's the perfect game for those inquisitive people who enjoy a good puzzle and the time and space to crack it\. Features Hand\-crafted modern pixel\-art The game is created using bespoke tools running within a custom engine designed to present a crisp high definition pixel\-art world using modern rendering technology\. Puzzles, lot of them You'll find lots of things to solve\. Some more obvious than others\. Each created using nearly 20 years of game and puzzle making experience Persistent living world The Moonstone Equation is a puzzle solving adventure within a world that changes and responds to when \(and how often\) you choose to play\. If it's night where you are, then it's night at the facility\. This responsiveness also extends to the colourful characters that populate the game world\. Don't worry you don't have to get up at midnight just to solve bits of it, but you might discover something interesting if you do\. Duration: 12\+ hours ## Game information - Type: game - Developer: Andy Buck - Publisher: Hippy Lizard - Release date: Aug 20, 2018 - Coming soon: false - Free to play: false - Parent Steam app: Not collected - Genres: Adventure, Indie - Categories: Single\-player, Steam Achievements, Steam Trading Cards, Partial Controller Support, Steam Cloud, Steam Leaderboards, Family Sharing - Platforms: windows - Website: Not collected - Screenshots: https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/589100/ss\_31356b00049c72e7f6bcddac77115d94296ccc8a\.1920x1080\.jpg?t=1565209125, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/589100/ss\_ac631569430c3f280850ac38b1a3f45d154b29de\.1920x1080\.jpg?t=1565209125, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/589100/ss\_02e44cd7617d08326704d0a285cae6d1d37a6ccf\.1920x1080\.jpg?t=1565209125, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/589100/ss\_0f639ba672e12d701ca0c8b990351ca0b87cb096\.1920x1080\.jpg?t=1565209125, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/589100/ss\_2c9bcf03a7d8274bd6920f8493fe53ea2d821b89\.1920x1080\.jpg?t=1565209125, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/589100/ss\_9de6b4671fe895437cdd6bcab73e974377500f6f\.1920x1080\.jpg?t=1565209125 - Price: 999 minor units USD; discount 0% - Price country: US ## Observed metrics - Current players: 0 - Steam review count: 25 - Steam positive reviews: 19 - Steam negative reviews: 6 - Steam positive percentage: 76% - Summer DB rating: No native votes Review filters: \{"language":"all","review\_type":"all","purchase\_type":"all","filter\_offtopic\_activity":0\} ## Player history [Seven-day chart data as Markdown](/api/v1/entities/3513121b-6e73-42c2-a2fc-56edf1cf97ed/player-metrics?days=7&format=markdown) · [JSON](/api/v1/entities/3513121b-6e73-42c2-a2fc-56edf1cf97ed/player-metrics?days=7) Chart values are hourly observed maxima. The sampled 24-hour peak and missing intervals carry explicit coverage; history before collection is unknown. ## Sources and freshness - Catalog membership: store\_catalog - Catalog observed: 2026\-09\-24T19:57:04\.362365\+00:00 - Details observed: 2026\-09\-22T19:01:24\.925648\+00:00 - Player count observed: 2026\-09\-22T19:01:27\.089425\+00:00 - Reviews observed: 2026\-09\-22T19:01:25\.933916\+00:00 Full provenance: \{"urls":\{"price":"https://store\.steampowered\.com/app/589100/","catalog":"https://api\.steampowered\.com/IStoreService/GetAppList/v1/","details":"https://store\.steampowered\.com/app/589100/","players":"https://api\.steampowered\.com/ISteamUserStats/GetNumberOfCurrentPlayers/v1/?appid=589100","reviews":"https://store\.steampowered\.com/appreviews/589100"\},"price":"2026\-09\-22T19:01:24\.925648\+00:00","source":"steam","catalog":"2026\-09\-24T19:57:04\.362365\+00:00","country":"US","details":"2026\-09\-22T19:01:24\.925648\+00:00","players":"2026\-09\-22T19:01:27\.089425\+00:00","reviews":"2026\-09\-22T19:01:25\.933916\+00:00","language":"en","editorial":null,"membership":"store\_catalog","observations":\{"price":"efd60056\-0616\-47ed\-abd4\-189f801972b4","catalog":"c26944d8\-4fa0\-4ce9\-b8dc\-580f0d5d863f","details":"213d58e5\-a4a5\-4caa\-9aea\-53578a7d1fc9","players":"d503575c\-44d4\-4c15\-bbfe\-319eab764b1f","reviews":"68f1549b\-2e02\-4266\-92fe\-ef0bc2be173d"\},"reviewFilters":\{"language":"all","review\_type":"all","purchase\_type":"all","filter\_offtopic\_activity":0\}\} Native rating methodology: \{"count":0,"average":null,"entityId":"3513121b\-6e73\-42c2\-a2fc\-56edf1cf97ed","revision":0,"observedAt":null,"methodology":"arithmetic\-v1","distribution":\[0,0,0,0,0,0,0,0,0,0\]\} Steam reviews are not Summer DB votes. Missing data is not zero. Player counts are observations, not historical peaks. A supplemental record does not establish that a game was delisted. [Steam store](https://store.steampowered.com/app/589100/) · [JSON](/api/v1/games/3513121b-6e73-42c2-a2fc-56edf1cf97ed)