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this post was submitted on 20 Feb 2026
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Games
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One of the craziest facts about modern gaming is that id Software essentially got started because John Carmack’s brilliant mind set to work on optimizing code until he got “smooth scrolling” in a 2D game that was previously considered impossible with the tech at the time iirc, hence all the games that required a fast refresh rate went from the top down, in the direction of the screen’s refreshing. I’m kind of a dumbass about tech so my lingo is probably all wrong.
But yeah, it was essentially optimization that led to a revolution in gaming, not just this brute force “make a bigger GPU” approach
It was specifically that he was the first one to get it working in DOS. He made a homebrew DOS version of the first level of Super Mario Bros. 3 and showed it to Nintendo to try and get Nintendo onboard with id making DOS ports of Nintendo games. They told him to fuck off so id ended up making Commander Keen.
Yes! That’s the story I remember, and I remember their Mario clone was called something like “Indiana Jones and the scary adventure of copywrite infringement” as they tinkered with it