I got UFO 50 on a whim, 2.5 hours in.
Mentally shot back to my childhood with a MS-DOS Genesis emulator on windows 98 and big honkin 90's grey CRT monitor and clackey keyboard.
Each of the 50 game so far (admittedly have only played like 12 so far) has been unique in terms of gameplay mechanics, like an anthology of game design ideas. I was skeptical of the reviews until I actually played it, the pixel art is competent but nothing to write home about.
The tetris-like neuron activation is dangerous, and I'm still in the blissfully unaware phase of whatever subplot the game descriptions and timeline lead to.