I am part of an event called "nethackathon" where multiple streamers hand over the same character/savegame to the next person in the schedule, like a relay race. What other games do you think would be good for a similar kind of event?

Nethack is ideal for a few different reasons:

• it has a clearly defined objective (win the game)
• permadeath means there are real stakes, we care if each character lives or dies
• a winning run usually takes about 10-20 hours, short enough to be done in the weekend of the event, but also long enough that it can't be completed by a single person and requires multiple streamers in 2 hour "shifts"
• transferable savegames (we play on a common server)
• the game itself is interesting and deep

What other games do you think would work well in this format and why?