I'll keep an eye on this for when it has more things to do, but I ran into two bugs during my short romp in this game.
1) At the start while you're outside, if you go right you'll end up disappearing and being unable to return.
2) Pressing E on the large blue box in the first room causes the game to crash. The error given is:
___________________________________________
############################################################################################
ERROR in action number 1
of Step Event0 for object obj_Door:
room_goto argument 1 incorrect type (string) expecting a Number (YYGI32)
at gml_Object_obj_Door_Step_0
############################################################################################
gml_Object_obj_Door_Step_0 (line -1)
All in all, I'm curious to see what you'll come up with for hall0oween. I'm looking forward to seeing your next update! especially if it includes any popping!