The company is officially created since October 14, 2011 but the Transformice game, born from an idea by Mélanie Christin, graphic designer and Jean-Baptiste Le Marchand, developer, was put online on May 1, 2010. The co-managers, Colleagues, decide, « to have fun », to realize a small video game on their free time. Transformice quickly becomes popular and exported to the international. Today, Transformice has 3 million active players on D-30 and 50 million registered accounts. It is translated into 17 languages. The economic model used is that of micropayments.
Atelier 801 works to create innovative video games while enhancing the community of players. Today, 12 people are joining forces to develop the company.