# Systematic Immunity

Summer DB entity ID: 39c11240\-363d\-49a2\-8d86\-f1742a71005f

Steam App ID: 395100

Systematic Immunity is a challenging precision platformer set inside the human body\.\.\.and not a particularly healthy one either\. This body has been infected by a big, nasty bugger of a germ, who is making it his business to spawn many more germs as fast as he can\. You and your mob of 20 white blood cells must put a stop to his shenanigans at all costs\!  Use all your skills to run, jump, roll, float, bounce and teleport your way through the inhospitable tissue of your host human\. But remember, each white cell can only kill one germ\. So watch out for casualties\! Key Features   Control your cells using the keyboard or XBox 360/One controller   Play through 75 levels spread through 3 organs   Defeat boss germs in each organ   Collect info snippets about the human immune system and biology   Unlock extra levels with their own collectible info snippets   Create your own levels to play and share

## Game information

- Type: game

- Developer: Hedge Knight Games

- Publisher: Hedge Knight Games

- Release date: May 20, 2016

- Coming soon: false

- Free to play: false

- Parent Steam app: Not collected

- Genres: Action, Adventure, Indie

- Categories: Single\-player, Steam Achievements, Full controller support, Steam Trading Cards, Steam Workshop, Steam Cloud, Includes level editor, Family Sharing

- Platforms: windows

- Website: Not collected

- Screenshots: https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/395100/ss\_04076da2f1d7830e01a2ff19ee717f0f1d6a5aac\.1920x1080\.jpg?t=1736266459, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/395100/ss\_fe0e3dab894c4427de8b395c3bb6503801477884\.1920x1080\.jpg?t=1736266459, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/395100/ss\_9eab07a3fafe986dce0781c4f96e65da85f66bf8\.1920x1080\.jpg?t=1736266459, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/395100/ss\_749de40c2421198525dd196a802b47a719483ffd\.1920x1080\.jpg?t=1736266459, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/395100/ss\_88ce973ab1d9e1a5ae5609a89fb9ad440f563126\.1920x1080\.jpg?t=1736266459, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/395100/ss\_a95687c43d0875773d6d7a4e81050d58b57ac372\.1920x1080\.jpg?t=1736266459, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/395100/ss\_e622cc909212c6cbb44a3671cc729a1493d90e98\.1920x1080\.jpg?t=1736266459, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/395100/ss\_d54ce0396cd40ffbd5a5e2765bf1645a7f4abc6f\.1920x1080\.jpg?t=1736266459, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/395100/ss\_5ba7bbbd366d9cffd51a30262ed675a4eefd15bf\.1920x1080\.jpg?t=1736266459

- Price: 399 minor units USD; discount 0%

- Price country: US

## Observed metrics

- Current players: 0

- Steam review count: 27

- Steam positive reviews: 22

- Steam negative reviews: 5

- Steam positive percentage: 81.48148148148148%

- 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/39c11240-363d-49a2-8d86-f1742a71005f/player-metrics?days=7&format=markdown) · [JSON](/api/v1/entities/39c11240-363d-49a2-8d86-f1742a71005f/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\-28T16:58:32\.455488\+00:00

- Details observed: 2026\-09\-22T06:34:53\.745582\+00:00

- Player count observed: 2026\-09\-22T06:34:55\.150536\+00:00

- Reviews observed: 2026\-09\-22T06:34:54\.778182\+00:00

Full provenance: \{"urls":\{"price":"https://store\.steampowered\.com/app/395100/","catalog":"https://api\.steampowered\.com/IStoreService/GetAppList/v1/","details":"https://store\.steampowered\.com/app/395100/","players":"https://api\.steampowered\.com/ISteamUserStats/GetNumberOfCurrentPlayers/v1/?appid=395100","reviews":"https://store\.steampowered\.com/appreviews/395100"\},"price":"2026\-09\-22T06:34:53\.745582\+00:00","source":"steam","catalog":"2026\-09\-28T16:58:32\.455488\+00:00","country":"US","details":"2026\-09\-22T06:34:53\.745582\+00:00","players":"2026\-09\-22T06:34:55\.150536\+00:00","reviews":"2026\-09\-22T06:34:54\.778182\+00:00","language":"en","editorial":null,"membership":"store\_catalog","observations":\{"price":"d6e4609d\-2ce7\-4bd5\-96f5\-13b6235882f1","catalog":"fa27f108\-b969\-47a3\-ac0b\-65f78f27089a","details":"37263c2b\-786a\-4d82\-946a\-22c1da052316","players":"f6849e28\-59e2\-4e27\-b710\-c0e16faf9c35","reviews":"d468bc8d\-ff4c\-401a\-9e9d\-24572fe72c26"\},"reviewFilters":\{"language":"all","review\_type":"all","purchase\_type":"all","filter\_offtopic\_activity":0\}\}

Native rating methodology: \{"count":0,"average":null,"entityId":"39c11240\-363d\-49a2\-8d86\-f1742a71005f","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/395100/) · [JSON](/api/v1/games/39c11240-363d-49a2-8d86-f1742a71005f)