Transformers: Decepticons is an action-adventure video game for the Nintendo DS released in June 2007 alongside its counterpart, Transformers: Autobots. The game is part of the Transformers franchise and follows the same plot as the 2007 live-action Transformers movie. Players can align with the Decepticons and engage in various missions, with the ability to scan vehicles and transform between robot and vehicle forms. The game features a unique storyline that allows players to control characters like Megatron and Starscream, and it incorporates multiplayer modes where players can battle others or team up to complete missions.