Magicka

Game Discription
Magicka is an action-adventure video game based on Norse mythology and developed by Arrowhead Game Studios. It was released via Steam for Microsoft Windows on January 25th, 2011. A free demo was also made available for download. The game was developed by eight students at Luleå University of Technology in Skellefteå, Sweden and has managed to sell over 200,000 copies in its first 17 days on sale.

In-Yogiverse
The Yogscast Magicka playthrough on YouTube features TotalBiscuit as a third player.

It appears TotalBiscuit is the recorder of the playthrough. The playthrough is recorded every weekend.