# Terraforming Mars \- Prelude

Summer DB entity ID: f33e9140\-e817\-45e1\-aa10\-018b1c868504

Steam App ID: 1245590

The taming of the Red Planet continues\! Enjoy new game mechanics and content for the acclaimed strategy game Terraforming Mars with the Prelude Expansion\.

## Game information

- Type: dlc

- Developer: Artefacts Studio

- Publisher: Twin Sails Interactive

- Release date: Dec 8, 2020

- Coming soon: false

- Free to play: false

- Parent Steam app: 800270

- Genres: Strategy

- Categories: Single\-player, Multi\-player, PvP, Online PvP, Shared/Split Screen PvP, Downloadable Content, Steam Achievements, Steam Turn Notifications, Remote Play Together, Family Sharing

- Platforms: windows, mac

- Website: Not collected

- Screenshots: https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/1245590/ss\_ce5b9cea94b79dadf7c2c4f4a03d21b8cbdaf58c\.1920x1080\.jpg?t=1694418530, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/1245590/ss\_cda123f7beee26d24bc724717caae27263128e93\.1920x1080\.jpg?t=1694418530, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/1245590/ss\_1d2225c30fcb933b135d4acda9eb811b13e187b5\.1920x1080\.jpg?t=1694418530, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/1245590/ss\_12a0de195f0ce3c1b3b866f28808250eb9433b59\.1920x1080\.jpg?t=1694418530, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/1245590/ss\_01aac23650dc7d500dbd1b5f6228d9d7d6e1dbe4\.1920x1080\.jpg?t=1694418530

- Price: 489 minor units USD; discount 30%

- Price country: US

## Observed metrics

- Current players: Not collected

- Steam review count: 81

- Steam positive reviews: 64

- Steam negative reviews: 17

- Steam positive percentage: 79.01234567901234%

- 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/f33e9140-e817-45e1-aa10-018b1c868504/player-metrics?days=7&format=markdown) · [JSON](/api/v1/entities/f33e9140-e817-45e1-aa10-018b1c868504/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\-24T19:04:18\.561182\+00:00

- Player count observed: Not collected

- Reviews observed: 2026\-09\-24T19:04:19\.617144\+00:00

Full provenance: \{"urls":\{"price":"https://store\.steampowered\.com/app/1245590/","catalog":"https://api\.steampowered\.com/IStoreService/GetAppList/v1/","details":"https://store\.steampowered\.com/app/1245590/","players":null,"reviews":"https://store\.steampowered\.com/appreviews/1245590"\},"price":"2026\-09\-24T19:04:18\.561182\+00:00","source":"steam","catalog":"2026\-09\-28T16:58:32\.455488\+00:00","country":"US","details":"2026\-09\-24T19:04:18\.561182\+00:00","players":null,"reviews":"2026\-09\-24T19:04:19\.617144\+00:00","language":"en","editorial":null,"membership":"store\_catalog","observations":\{"price":"6e46c1be\-62b2\-484a\-940e\-d850660392c3","catalog":"eff881ec\-f665\-4f10\-8e14\-e35a9d750f18","details":"41155d6e\-1b54\-4d19\-82d7\-3edc90889248","players":null,"reviews":"b995aad4\-c65a\-411e\-90f3\-b37e63d772c8"\},"reviewFilters":\{"language":"all","review\_type":"all","purchase\_type":"all","filter\_offtopic\_activity":0\}\}

Native rating methodology: \{"count":0,"average":null,"entityId":"f33e9140\-e817\-45e1\-aa10\-018b1c868504","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/1245590/) · [JSON](/api/v1/games/f33e9140-e817-45e1-aa10-018b1c868504)