How long does Children of Bodom play in a gig?

depends on where they play and if they headline or not. when i saw them here in america they were openers so could only play 6 songs. however if they are headlining they can play for over an hour and like 15 songs or so i believe.
 
If they are headlinging they play 75-85 Minutes. And of course they will be a guest in Paris. The special guests for the Europe Tour arent announced yet. They will be announced soon.

So dont fuck around and just waiting for future announcements