As second entry for the DOS Game Jame June 2023, I've ported my game chro.mono to DOS. I didn't get the audio working (DMA and DPMI are not my friends) and didn't have time to optimize the rendering to work on older machines, but if you have a fast CPU, I'm sure it will run well (there's a FPS counter you can activate to compare performance).

It uses a custom software rasterizer, but it hasn't really been optimized for retro machines, so this is probably best consumed on a "fast" DOS retro PC. You also need a mouse driver installed.

This uses standard Mode 0x13, and dithering to get the game's content down to 256 colors.

If you like the game, a version with audio and higher-resolution graphics (ha!) is available on Itch.io as well as on the iOS App Store.

Edit: Version 2.4.1 which fixes timer-related issues and should provide much smoother animations.
Edit: Version 2.4.2 adds an alternative circle rendering method that is faster on slow CPUs.

Itch.io: https://thp.itch.io/chromono2