I wrote a game of Tetris in JavaScript with SVG many years ago. It had nice graphics and was smoothly animated. I hadn’t heard of anyone else using SVG like that at the time.

I also made a game called Pro Office Calculator (available on Steam), which includes a Doom-style 3D engine for which I used Inkscape as my map editor. Here’s an example of a map: https://github.com/robjinman/pro_office_calc/blob/develop/da...