Torvalds wrote git for the Linux kernel, and then GitHub popped up because most other projects couldn’t handle the decentralization. Interestingly to OP’s frustration, they were using a proprietary VCS before that, and people were just as frustrated about that: https://en.wikipedia.org/wiki/Git#History

I hope it doesn’t Rust

Hey thanks for describing this hypothetical situation, I pay Steam for a lot of game licenses so I’ve lost touch with the current philosophy of hypothetical alternatives.

Eventually the line comes back in from the top.

Upvote for calling out the ambiguity in the title:

• “Doom popularized some mechanics still used today” - this is not that.
• “FPS engines descend from ideas in the Doom source code” - this is not that.
• “id named their engines with ‘Tech’” - this isn’t that, Doom was before that.
• “Modern descendants of the original Doom engine can informally be called ‘tech’” - this is what the title means.

Best adventure game ever