They really shouldn't have published Mark's special episode until they finished publishing his route. I played what's available to the public with Mark's route and I fucking love it. Then I played his special episode and now I can't get it out of my head. I have too many questions now.
SPOILERS BELOW.
Was everything that happened after day 4 just a game? Was it not real? Does Mark not really love MC? What was the thing he got sent? Who's the "old friend"? There was a point that might suggest it was MC's dad. THE FUCK DO YOU MEAN MARK AND ANDERS WERE BOYFRIENDS?!