Played this on Furling's a little while ago and it was really fun.
I noticed that it actually did sort of work well with a large expedition group.
People formed into their own squads naturally and set off to do different objectives - One group of people were battling the Green Demon while another were fumbling with the gates. Occasionally the two groups would meet at a corner and non-verbally and without halt exchange members. Nice little group-mind thing.
Anyway, to the actual game, it was really fun with all of the other players and the rush of fighting Ashlur myself (I got the soul key! :D) but I felt it was mostly running through a maze with occasional shooting. I feel that it could use more interactive areas/terrain, and maybe trap-puzzles. This is ironic because the title itself is "Interactive Puzzle", yet it isn't very interactive (excluding killing the Mummies and collecting Gems) and there were actually no puzzles - simply putting keys into doors, my Grandfather would say. Actually, anyone would say that.
In whole, it was a fun game with a lot of visible effort and creativity put into it, but if possible it would be even more enjoyable if it was an Interactive Puzzle.
grammar-ramma!