German toy company Ravensburger has acquired ThinkFun, a US developer of logic and STEM-based games like Rush Hour (pictured), Zingo and Gravity Maze. With the acquisition, Ravensburger is looking to broaden its brand portfolio while strengthening its position in the US toy market’s games category.

As a subsidiary of Ravensburger North America, ThinkFun will continue to operate as an independent brand based in Alexandria, Virginia. ThinkFun co-founder Bill Ritchie will stay on as CCO, and the company will retain its directors and staff.

As the most recent company brought under the Ravensburger North America division, ThinkFun joins Wonder Forger and Brio, which were acquired in 2012 and 2015, respectively.

Ravensburger North America’s product range spans a number of categories including puzzles, games, playsets, wood toys, arts & crafts and science kits. Earlier this year, Ravensburger led a Series B funding round for UK-based personalized publishing startup Wonderbly (previously Lost My Name).