Bias Modification is an Android game that aims to make you happier, based on scientific research. It falls under the Games category, with a subcategory of Educational. The game is developed by Mikko Tyrskeranta and is available for free, with an optional premium upgrade available through a one-time in-app purchase.

The game is based on cognitive bias modification (CBM), which has been proven to help overcome the tendency to focus on negative or threatening social cues. The game uses familiar match-three gameplay to repeatedly make you select positive over negative information. The more you play, the more you improve.

The premium upgrade allows you to view your progress and play longer than one minute rounds. To report any bugs, use the FEEDBACK button in the game's HELP screen and provide as much precise information as possible to speed up the fixing process.