Your goal in
Indigo Prophecy is to figure out what really happened before the police track you down and arrest you. So imagine yourself as Kane. Last thing you remember you were at one of the booths in the diner eating your dinner and now you are standing over a bloody body with the murder weapon in your hand. What do you do? Well, I was able to at least try everything I could think of. You can drag the body into one of the stalls (or not), you can wash your hands (or not), you can get rid of the murder weapon (or not), you can try to clean up the blood on the floor (or not), etc. But you don't want to take too much time in the bathroom, because the cop at the diner's counter that has been reading the newspaper and drinking who knows how much coffee is about to need to go to the restroom.
Eventually, the cop will get up and start walking his way to the bloody room; if you are in there when he walks in, the jig is pretty much up. If you leave the bathroom all cleaned up and blood free, then you can probably make it out the door before he discovers the body. If you moved the body then it takes him an extra few seconds to find it, but he will find it. I was flat out amazed by the wide variety of choices I was presented with. If you walked out of the bathroom with blood all over your hands, then you run into the waitress. The cop gets up and asks what's wrong. At this point, you can either run out the backdoor or get arrested.
If you manage to get cleaned up and decide to just leave the diner, when you reach the door, the waitress gets your attention. You get treated to a nice, quick internal monologue about whether or not she knows something. At that point you can either decide to run for it or ask her what she wants. If you talk to her -- she reminds you about the bill, if not then you've made it out the building. I can only imagine what that choice will lead to in the future. After all a man just up and running away is a bit suspicious at a murder scene.
Other choices that I played around with included paying the bill, sitting back at the table and continuing to eat the food, or going up to the cop and trying to confess. I also sat at the diner's counter and watched some TV. If/when you make it out the building, there are several different ways you can go. Do you take the subway or hail a cab or just walk away on foot? I can see how each of these choices might affect the future of the game (after all, the cabbie might remember you and where he dropped you off at), unfortunately I don't know what happens after that point, since that is where the demo ended.
