Impulse was a digital distribution and multiplayer platform. Originally developed by Stardock to succeed Stardock Central, it was purchased by GameStop in March 2011, and was subsequently rebranded as GameStop PC Downloads, with the client being renamed GameStop App. The client was discontinued in April 2014.Impulse facilitated the purchase, download and updating of software. The platform also provided blogging, friends-list, chat, game matchmaking, achievements and ranking to certain games.