Neat concept, however this games has some major flaws. Your character moves quite slowly in comparison to your friends. Although a dark maze is interesting I think this may have been a tad too big to explore. And, yes it is helpful that you have a tracker of sorts a random friend but since you can only capture one person at time and the tracker still follows the other people this can get quite confusing. The text also gets cut off, if it wasn't for the fact that it was posted on the description of the chat, some information may have been lost.
As for the good, neat pixel style for the sprites and the art is actually decent.
Keep up the good work