We are redesigning psychological tests as applied games. Thus we try to make the classic psychological assessment more entertaining. The games may also provide a way to train certain cognitive functions. While there is a huge market advertising that “brain training games” provide substantial benefits and improve your mind and brain, these claims are not solidly based on scientific research. For more information on this issue please read the open letter A Consensus on the Brain Training Industry from the Scientific Community signed by many of the world's leading cognitive psychologists and neuroscientists. Hence, one goal of COSMOS is to provide the solid scientific data to investigate the claims put forward by online portals that charge money for their cognitive training programmes. Currently, we are starting the pilot-phase of COSMOS comprising only a few games. We will keep adding additional games that aim at testing or training also other cognitive abilities. As a matter of course, we’ll keep you informed on all of the scientific discoveries that come from analyzing the data you provide us by playing our cognition games.