You Don't Know Jack Headrush
You Don't Know Jack Headrush: multiplayer, on PC and Mac, came out 20 April 1998.
Want to play You Don't Know Jack Headrush with friends?
Pick a night together in Lobbli: everyone marks when they are free, and you see which evening works.
Quick answers
Is You Don't Know Jack Headrush co-op?
You Don't Know Jack Headrush has multiplayer, but no co-op mode is listed for it.
How many players?
The catalogue does not list a player count yet.
Split screen?
No split screen mode is listed for it.
When did it come out?
20 April 1998.
Which platforms?
PC and Mac.
What kind of game is it?
Quiz/Trivia
Who makes it?
Berkeley Systems, Jackbox Games, Jellyvision