Guillaume has 25 years of experience in creating new video-game worlds. He is the founder and CEO of Compulsion Games, the studio behind the games Contrast, We Happy Few, and the upcoming South of Midnight. Compulsion Games was acquired by Microsoft in 2018, and is now part of Xbox Game Studios. Guillaume was also involved in the creation of Kowloon Nights, an international game investment fund based in Singapore, and is an angel investor in multiple independent game studios.