I wouldn't say PoP is an adventure game, it's just a platformer with a simple story (like super mario) though Fate of Atlantis is an amazing first game to pop your adventure game cherry to
Lol, KQ3 was my cherry popping first time playing an AG too.. And i didn't cope with the parser coming from console (NES) and having limited english skills at the time (and lack of concentration due to ADHD probably didnt help either),😂 but the NES got shadowgate and deja vu, so those are the ones that finally got me into adventure games
I remember my childhood in Brighton, When dear old dad would bounce me on his knee, He'd say "son there is nothing as exiting, As exposing beasts to inhumanity!"
First AG i really played (i think) was Kings Quest 3, but at the timez me having mediocre english, and being more used to my NES, which didn't require me to type in english and just had four directions and 2 buttons, i only dabbled a little bit, but the parser put me off..
Then i was bit by a radioactive shadowgate and deja vu on the NES, (which are first person point and click games that actually kinda work on the console system,) and it finally awoke my true adventure gamer powers, and have loved them ever since.
The first time i ever saw an adventure game, i was too young to really comprehend what it really was, i saw my brother playing Zak McKracken, and it seemed "grown up and boring" to me, but what made me realise the magic of what adventure games are, was watching my cousin play monkey island on the amiga, and i remember he was playing the part where you use a rubber chicken with a pulley in the midle to go to hook island.. he had to go back and forth on the wire a few times because the sound it made had me in stitches.