holy shit, absolutely insane entry. most creative one I have ever seen. in the like, 10 mins I played this, I actually felt my heart rate increase. the build-up from "eh its okay i can probably traverse the entire lower corridor before the toxicity goes high" to "PURGE AFTER EVERY COMMAND" is extremely well-done. the story being told in this mysterious, almost context-less manner that invites you to fill in the blanks is amazing, too. probably the first overall 5-star for me this jam.
p/s: i think 'defective side effects' works better for this entry, with the toxicity being literally disruptive to the gameplay. c: