Vintage gaming community.
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Commander Keen! We had 1, 4, 6 and Dreams. Probably all of them Shareware. Those games made me want to get a pogo stick.
Might and Magic 4+5: World of Xeen waa what I considered our first "real" game. I didn't really understand it at the time. It's turn based but I played it like it's real time. I still play it every other year.
The biggest ones for me were the Marathon series, and a lot of old shareware RPGs (Realmz, Exile).
The 3rd title in the Marathon series came packaged with all of the tools they used to make the game, with which you could very easily make new maps and wild mods adding or changing weapons, enemies, mechanics, etc... I spent an absolutely unreasonable amount of time fucking around with that.
The maps were very rudimentary 3D (think Doom style), and they weren't really 3D spaces so much as just corridors and rooms connected to each other. You could have a corridor that turned 90 degrees 3 times with no elevation change, and passed "through" itself, without actually having the two intersecting corridors connect in any way, which let you make some really wild maps with some pretty unique features that would be challenging to pull off in modern games. (There was even a multiplayer map called 5D Space that really showcased this interaction.)
Programs are software. Technically, games are also software, but they evolved into their own genre.