The easiest way to describe it is probably as a frantic hybrid between Avoider and clicker games. I managed to win but still do not understand what the exact consequences of the glitches are in terms of progress. Plus, they seem to speed up after some condition is met (perhaps a timer after spawn or proximity to mouse?), but I am also unclear on that. For posterity, the way I won was by paying only mild attention to the glitches and focusing more on constantly & rapidly clicking while dragging the cursor around to close the pop-ups until I got down to just a few. Basically a button-mashing approach. I don't really understand how I won, to be honest.
The visual and contextual theming is well done. The overall aesthetic vibe leans on the cute side and reminded me of Beglitched on iOS. The game states and UX/UI are all there as well, menus and win screens and all. If the audio was not using pre-existing assets, I would have given the presentation 4 stars instead. Everything was very fitting, save for perhaps visual distinction of the glitches, which got a little hard to see in the clutter.
It's a cute message-in-a-bottle sort of game. It's the type you play once, appreciate the idea/motif, and are done. Not every game has to have great replayability or offer lengthy playtime. Some games, like this one, are mainly about executing the one punchline well. In that regard, I think it did pretty well (minus needing some balance tweaking perhaps).
Overall, a solid and very complete experience. I liked it well enough, as I prefer games that have a clear identity, and this one captured exactly what it intended to be. Good work, but I won't be playing again.
P.S. Now come and take your pop-ups away, please. They are like a relative's kids: cute initially but turn annoying from the first half-hour onwards.