[pflanze]

The RP2040 has 264 KiB of RAM. RP2040 Doom: https://news.ycombinator.com/item?id=30672527

PS. although, the RP2040 has 2 cores and programmable IO controllers, which IIRC were pretty needed to deal with the low memory (and sound). I don't know how this chip compares.

[pflanze]

Also, as I just realized, the RP2040 Doom author is also the Pico SDK (lead?) developer at Raspberry Pi Ltd.[1], which probably contributed as much to the success as the two cores and their PIO controllers.

[1] https://www.raspberrypi.com/news/doom-comes-to-raspberry-pi-...