Mine was “Adventure” on a PD8 mainframe while at University in the mid 70’s. At that time we had no monitor’s just output to paper rolls on a glorified typewriter. Really slow.
From that point on, I was addicted to computer fantasy/adventure games.
My first PC game was Ultima I on an Apple 2+ computer. Amazing what they did with such limited processors, ram and storage.
I don’t know about my very first for certain, but Tales of The Sword Coast sticks out as the first one I really got into. That or Thief: The Dark Project.
(Or The Oregon Trail at school, if that counts. Lol)
My very first computer game was some game on a super big floppy disc that you had to launch from dos. It was like this big tree house and i think had mini games or something. Very vague recollection of it
You smell as old as dirt.
I’m 36 lol
First computer games were probably Oregon Trail or other educational stuff.
First fantasy game that I played extensively? Probably the original Warcraft lol
Warcraft orcs and humans, though thats a rts game, so if that doesnt count the orginal diablo. First fantay adventure not blizzard related ultima 9 assension a few years later
LOL, then you where playing on outdated junk.
(Born in the 90s)
My first adventure computer game was my dad giving me a demo of Commander Keen (demo) on his Windows 98 computer as a lil 5 year old bub. Needless to say I was horrible and knew absolutely nothing about it.
We were kinda pov so it would be a decade till we got internet at home and I’d get addicted to MMOs.
King’s Quest 2 on Tandy
I mean, it definitely wasn’t top of the line stuff but we’re literally talking about pc gaming in 94 for a 6 yr old kid
Oh goodness. Hello fellow old person. Heh, I remember playing this when we finished whatever school assignments they had given us. All on that stupid little Mac with the disc drive in the front. 
For the thread topic. I played my first RPGs and such on Genesis. It was a bit before I had a computer in my house. My first PC game that I played (other than Oregon Trail and Carmen Sandiego) was prolly Diablo 1, though. My first real PC RPG (since I am not sure I would count Diablo) was Morrowind.
I’m gonna date myself here with Quest for Glory on good ol’ windows 3.1
I can’t say that I recall what it was. I remember playing console roleplaying games when I was young though. I was exposed to the first final fantasy and dragon warrior games.
mine was Asherons call
Hero’s Quest series by Sierra. So you want to be a hero? 
Edit: Also known as Quest for Glory.
Mine was PONG.
How about Pong.
Jinx to you lol
I played that, it was fun.