Steam 250
Ranking history
T1Review history
T1Price history (USD)
News
AI for more demanding players. DLC covers all three stages of the Chess game: opening, middlegame and endgame.Opening Book is based on more than 300k grandmaster games and it takes result of each game into account.
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Tags Tags are sorted in descending order of votes. Votes are the number of times a tag has been applied to this dlc by a Steam user, shown next to each tag name.
Dates
- Released
- 2017-09-06 (8 years ago)
- First review
Date of first review. Dlcs cannot be reviewed before they are released, so when this is earlier than the release date, it usually indicates a dlc that was in early access.
- Update pending
- Age on Steam
Days since first review, which is typically how long the dlc has been available for purchase.
- Unknown
Reviews
- Total reviews verified
- 0 0
- Review breakdown
- 0 0
- Review velocity
- 0 reviews per day
- Reviews today
- 0
- Days in top 1000
- 0
- Estimated owners Based on research by GameDiscoverCo median
- Update pending
Pricing
- Release price
- $0.00 (2017-09-06)
- Lowest price
Date of the earliest occurrence of the lowest price this dlc has sold for.
- $0.99 (2020-10-07)
- Average price
- $0.99
- Average discount
- –
- Number of discounts
- 0
- Days discounted
- No discounts yet
- Estimated gross sales Based on research by GameDiscoverCo median
- Update pending
- Estimated net sales Based on research by GameDiscoverCo median
- Update pending
Languages
- English
Details last updated: June 13, 2026 03:01 UTC
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