Okay. Today, I was invited to try some RP in Garry's Mod called "City 11". I was completely new to this, so was a total beginner. Someone has created scripts and basically has spawned a "mod" that works within the game, for the purposes of an RP environment
The story so far, that had started, as that the inhabitants of City 11 were temporarily moved out to this camp (Cs_Compound, modified in fact) and that we were stuck here until a toxin cloud and/or portal storm had cleared. Some played as Civil protection, and overseered over us. I had my character, Seth Miller, a shoe-in of myself, explore and get to know folk.
We were soon ordered to construct a walkway from the CP part of the compound to our quarters, which we got started on. The three of us who were doing so (others were slacking) were called up by the CP overseer and we were all bollocked for using the wrong material. Instead, we decided that we had to smash up the medical building for its wood, to finish the walkway. I decided to go and negotiate with the doctor in charge if we could move the equipment in the ward to elsewhere in the warehouse. Reluctantly, she let us.
While we were doing so, the eventmaster had a scream occur outside the front gates. I ran to investigate, and saw a sonichound thingy hopping about. In a panic, I ran to the nearest cop and asked him to come shoot it. He followed me, I pointed it out, and he wasn't impressed, deciding to dismiss the creature. At any rate, work continued as me and another individual moved equipment to a new room in the warehouse.
Soon enough, however, a rebel caused some trouble, and one of the cops started firing in the open street. In a panic, all of us unarmed civilians ran into the warehouse, avoiding the windows and hugging the walls. Eventually, one of those scaners were deployed, and we were all ordered to come outside and line up against the wall (Even the female announcer was scripted from the HL2 game itself). Many of us panicked, and we were torn between deciding to actually comply, run, or stay inside. Some of us complied, and a woman decided to RP a small panic, busting out pills and heading into shakes.
I stayed with her, another guy as well, which I ordered to head out and comply, to avoid him getting into trouble. We figured we would hide, until a cop came, shining his flashlight, and catching us. We were promptly taken outside, and had our IDs investigated. After which, we were ordered inside. I had my character go to bed, and subsequently quit for the night.
Anyway, I have to say, being able to physically control and SEE your character makes a HUGE difference to the level of immersion. I was completely drawn in, felt like I was really there, playing as an actor in a role. The physical restrictions were moot, as people would RP leaning on doors, facial/hand gestures regardless. If this was anything to go by, then Incarna might be pretty enjoyable.
Though I doubt we'd have the scripted, tabletop D&D style events going on, of course.