The game is pretty simple, being only a series of stages that mix of memory match and bullet hell, and with stages and music being very minimalistic.

But it works out pretty well, in my opinion.

Two things to note, however:
1) Achievement hunters may want to stay away from the game, since achievements' been broken since late 2020. Maybe downloading an older update through Steam's official depot_downloader tool can help, but I haven't tried.
2) The game can be pretty stressful for people susceptible to sensory overload, as the stages happen in confined areas and you're under fire at all times while trying to match tiles. Stages 6-5 and the last one, 10-5, can be pretty BS about it.

But overall, I recommend, but keeping in mind the two observations above.