# Sentinel

Summer DB entity ID: 910b4cde\-c6aa\-4713\-82ab\-01f9d784a476

Steam App ID: 293200

Sentinel is an interactive audio tower defense game\. It mixes strategic game play with a dynamic music system\.    The game takes place on a sequencer\-like grid\. As you add defenses, collect resources and destroy enemies, musical elements are triggered in time to the music\.     Fight through 31 levels to clear the virus from the system\.

## Game information

- Type: game

- Developer: Matthew Brown

- Publisher: Matthew Brown

- Release date: Apr 22, 2014

- Coming soon: false

- Free to play: true

- Parent Steam app: Not collected

- Genres: Indie, Strategy

- Categories: Single\-player, Steam Achievements, Family Sharing

- Platforms: windows, mac, linux

- Website: Not collected

- Screenshots: https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/293200/ss\_28b75279bb8bd6f36b4364934ada697c7e63828b\.1920x1080\.jpg?t=1473099393, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/293200/ss\_5fc83090c586278bec144e9ad4f97a814d133813\.1920x1080\.jpg?t=1473099393, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/293200/ss\_d2ccfccc25c1a99a5bf03a7d3c45e72e3e0b8c18\.1920x1080\.jpg?t=1473099393, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/293200/ss\_5b49050ae364d58e73441ad52131f7424ccb3c10\.1920x1080\.jpg?t=1473099393, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/293200/ss\_35f5c96ac1e155ea13ad491049782d6c80913592\.1920x1080\.jpg?t=1473099393, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/293200/ss\_ec752dd377a31ac730dec9ff752b3387b2683adf\.1920x1080\.jpg?t=1473099393

- Price: Not collected

- Price country: Not collected

## Observed metrics

- Current players: 0

- Steam review count: 97

- Steam positive reviews: 63

- Steam negative reviews: 34

- Steam positive percentage: 64.94845360824742%

- 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/910b4cde-c6aa-4713-82ab-01f9d784a476/player-metrics?days=7&format=markdown) · [JSON](/api/v1/entities/910b4cde-c6aa-4713-82ab-01f9d784a476/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\-29T00:22:35\.021953\+00:00

- Player count observed: 2026\-09\-29T00:22:36\.381625\+00:00

- Reviews observed: 2026\-09\-29T00:22:36\.093898\+00:00

Full provenance: \{"urls":\{"price":null,"catalog":"https://api\.steampowered\.com/IStoreService/GetAppList/v1/","details":"https://store\.steampowered\.com/app/293200/","players":"https://api\.steampowered\.com/ISteamUserStats/GetNumberOfCurrentPlayers/v1/?appid=293200","reviews":"https://store\.steampowered\.com/appreviews/293200"\},"price":null,"source":"steam","catalog":"2026\-09\-28T16:58:32\.455488\+00:00","country":"US","details":"2026\-09\-29T00:22:35\.021953\+00:00","players":"2026\-09\-29T00:22:36\.381625\+00:00","reviews":"2026\-09\-29T00:22:36\.093898\+00:00","language":"en","editorial":null,"membership":"store\_catalog","observations":\{"price":null,"catalog":"505a2caa\-e1a5\-4389\-8d4f\-62b2e06e5f31","details":"98adca71\-fb16\-414b\-ba3d\-d368183bcdc0","players":"0cfcddc2\-f46d\-46a2\-b525\-b1bcfa9ee04e","reviews":"ac6ce989\-bb6d\-4493\-8d52\-8eece60d614a"\},"reviewFilters":\{"language":"all","review\_type":"all","purchase\_type":"all","filter\_offtopic\_activity":0\}\}

Native rating methodology: \{"count":0,"average":null,"entityId":"910b4cde\-c6aa\-4713\-82ab\-01f9d784a476","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/293200/) · [JSON](/api/v1/games/910b4cde-c6aa-4713-82ab-01f9d784a476)