You can talk to the "npcs" by bumping with them. They give you hints. After that it's just a matter of very very very simple observation.
I actually wanted to make the trapping of the floating numbers more meaningful by doing them a bit more dangerous or something, but it ended up like that, you can just dodge them if they come close and such. I mean, making them chase you was easy, however I thought that maybe the scenario wasn't fit for dodging things that chase you or something, IDK.
Anyway, thanks! Also glad you liked the 5 minute production music, I just wanted to break the silence a bit hoping it wouldn't get jarringly repetitive, however I might do expand it later, it was quite ok the idea of the song, I think. :')