I got the normal and the chaos ending! There's not really gameplay per se but it's still very enjoyable - I had a few laughs.
It would be cool if there were some more storytelling and twists. For example, maybe someone looks like a murderer but the person behind them explains the situation by proving that they just came back from a costume party or something. Or maybe the people in line can react to what happens in front of them (maybe the robot shooting causes children to run away, etc.)
Those are just some of my initial thoughts, but well done overall :]