First computer, a ZX Spectrum clone called Cobra made by a guy, 48k memory, hooked up to a black and white TV (guy soldered what was needed on the TV's circuit board and drilled holes into the side for the jacks to go in) and a casette player, and which tended to overheat after about 2h.
Games played on that, aside from various simple type in things from some magazines or books, recall dad getting some tapes with various stuff on them (and that the stuff that started on one side and continued on the other didn't load), there was Track & Field, Dynamite Dan, River Raid... not sure what I played Karateka, maybe Paratrooper, and some game with the Pink Panther on, may have been on that.
First x86, 386 SX 16 MHz, 512 kb probably Trident video card, 2 Mb RAM and I think 120 Mb HDD. Some chance it may have just been 80 Mb. The guy making the accounting program my mother used kept complaining of how slow it was (program made in FoxPro, he kept coming over to apply changes, be they due to regulations or stuff my mother asked for, and he'd compile it on our computer, guess that was DRM at the time, and it took a long time). That one never was in my room, but used it a lot.
What I played on it and what on the next (486 DX2 66 MHz, same video card as before, 4 Mb RAM later upgraded to 8 Mb (for Warcraft 2), 540 Mb HDD - first that was also in my room) tends to be blurred though, just some 2 years between them and the 2nd taken as an upgrade, parents handed over the first one to some guys and I guess paid the difference and got the new one back, with everything on the HDD as it was before. But going through games I identified as having played, let's see... Sure about Dynablaster (Bomberman), Mice Men, Grand Prix Circuit, Sharkey's 3D Pool, most probably also Prehistorik 2 and Lotus: The Ultimate Challenge, possibly also Body Blows, maybe also Alcatraz, not sure if Alley Cat was also on that, Arkanoid, not sure of Titus the Fox or The Blues Brothers, really not sure of Amazon: Guardians of Eden, probably F-15 Strike Eagle II, possibly the first 3 Larry games (remember dad getting a later one too from somewhere and it not working), possibly The Lost Vikings, possibly Quest for Glory 2, quite sure of Oh No! More Lemmings, maybe Another World (but very briefly), and of Serve & Volley, possibly Space Quest 5, likely Stunts and Test Drive, and a lot of Supaplex, and there is a chance Wolfenstein 3D was on that too, maybe a few rounds of Arcade Volleyball too if that was on a computer I had at all, possibly either Elite or Elite Plus, whichever one I did play, Blockout if that was the 3d tetris game I remember, and on that note maybe Sextris as well (heh...), likely Operation Wolf and Wings of Fury, plus various sharewares (Jill of the Jungle, I think Dangerous Dave in the Haunted Mansion, maybe Kiloblaster and/or Overkill...). Guess that's as far as I can dig up, going by release dates and memories of which room I was in and what else I had at the time.