I had a think pad from the early 90s (running on win. 3.1), that I bought in the middle if the 2010s to also do that.
It had a floppy disk drive and analog port
Anyway, i couldn't even have time to work on it, as materials from the 90s didn't age well.
Just by opening the screen to boot it up a few times, the plastic case broke.
After opening the service panels, the foams inside (because there needed foam on the hdd for some reason) went into mist
so the MB and the electronic part was the only that was recoverable, not the plastic shell
I wonder if OP is having the same issue, if he tries to actually use the laptop
I don't remember game ports on any of the Thinkpads (I worked for IBM at the time and serviced a lot of the very early 700's and 710's).
They had parallel ports, DB9 serial, DB15 VGA, and a couple of PCMCIA/PCCARD slots, IIRC.
Game ports were DB15, and as the Thinkpads were squarely targeted at business users, taking up the real estate for a "game" port would seem unlikely, and possibly even a turn off for buyers of that era.
At some point internal modem's and NICs came along, but I think we might have been out of the 90's by the time that happened. I remember juggling an analog modem, 10Mbps Ethernet and 4/16Mbps Token ring PCMCIA card, depending on what I was doing at the moment.
Anyway, i couldn't even have time to work on it, as materials from the 90s didn't age well.
Just by opening the screen to boot it up a few times, the plastic case broke.
After opening the service panels, the foams inside (because there needed foam on the hdd for some reason) went into mist
so the MB and the electronic part was the only that was recoverable, not the plastic shell
I wonder if OP is having the same issue, if he tries to actually use the laptop