The sound is pretty good, but I would say this doesn't meet the theme very well at all. As a game with some upgrades to graphics and game design, it could be pretty decent, but in its current state, it just feels weird. You die two seconds from the start if you don't move so I suggest making you start from the middle and with a decent separation have the circles around you in a spiral of distance. Also making the walls actually walls, and the bullets have better physics would be nice. Maybe add stages of difficulty as well. Could be a good game, but in its current state it neither fits the theme, or is something many people would enjoy playing.
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So, if you played the game without the context of the theme, sure you would subconsciously know, this isn't real, but that is true for any other game. You could also grasp that it is not realistic but being realistic isn't being real. So, you would likely never come to the conclusion that this was made to fit the theme "It is not real" and if you heard it was like you likely would for most games as not many look for a theme, you would probably be shocked.