TF2Mixup is a non-profit organisation hosting a Team Fortress 2 playground where celebrities kill eachother repeatedly for charity.
The game matches including game developers, online celebrities, competitive players and randomly picked players from the fan community.
Since its creation, the organization was able to gradually include more well-known players in the matches and increased its publicity with each event. The fourth event had one million views and raised approximately $14,500 for charity, starring players like Notch, Yogscast, Freddie Wong, and developers from Valve Corporation and Bethesda Game Studios.
Donations were given unshortened to a charity at each event. The organization is no longer active but previous events are still available online for archival purposes.