You've been wandering around Aperture Science. For some reason, you can't seem to find any other living being, recorded messages, or even AI! Maybe you should figure out what's going on...
Yeah, it's 240p. Please forgive me. I have a really bad internet connection.
This is the entire mod so far. The energy ball receiver in the final level refuses to fire the logic_relay. I might have to replace it with a laser emitter if I can't figure it out, but I like the energy balls.
In that last test, the player picked up a Dual Portal Device, then quickly changed to a Blue Device. This is probably because you put "sp_" in the front of the map name (which causes the player to spawn with a Dual Portal Device). That, or there is a weapon_portal gun instance in the elevator.