Games media service RAWG opened the RAWG Video Games Database APITrack this API for developers. RAWG is the largest games database with over 300,000 of games, 2M of screenshots, 400K of reviews and ratings, and now you can access all of it and much more via the API.
The API is open and free for non-commercial and research purposes. All projects looking to utilize the API for commercial purposes should apply at firstname.lastname@example.org. The pricing is individual and depends on how much data will be used and what it will be used for.