GameDuell GmbH | 6,534 followers on LinkedIn. GameDuell – Bringing people together to have a good time with games The passion for creating high-quality games and the focus on a superior customer experience have made GameDuell one of the largest cross-platform games communities in the world. Since 2003, more than 130 million players have played with us. GameDuell offers a broad portfolio of over 40 casual online skill games on the popular game site www.gameduell.com, mostly developed in-house, such as Fluffy, Bubble Speed, Jungle Jewels and game classics like Hearts, Solitaire, and Spider.