Very cool. I'm having trouble with the moving portal trick myself. From your map it looks like you parented an info_placement_helper to a func_brush, and that func_brush can be parented to a func_rotating or a func_tracktrain to make it move. Is that right? I'm very curious about this whole mobile portal idea and would really appreciate any help. As for the "sucking people in" thing, for the ideas I'm getting that might actually be beneficial. EDIT: Ok I figured it out, I was doing it right but I forgot to change the cvar sv_allow_mobile_portals to 1. And you weren't kidding about the weird physics thing.