Paradox's fantasy title Magicka has sold 30,000 units within its first day of release. The PC game is currently only available for online purchase.
The $9.99 Swedish-made game reached number one in Steam's chart, though was also available on other download services.
Magicka has drawn some criticism for its bugginess, but developer Arrowhead is committed to a 24 hour rolling release schedule for patches.
Arrowhead CEO Johan Pilestedt told GamaSutra that "We would've been happy if a couple of thousand people bought the game, or if 30,000 were the total sales for the whole period."