I wonder if there are aspects of this that would make it difficult or impossible to port to, say, the Esp32 microcontroller? An inexpensive and ubiquitous hardware implementation would make this perfect!
There's apparently a port floating around to run it on OpenDingux devices (little handheld gaming devices with MIPS CPUs), so it is at least fairly portable. If the OpenDingux port works- I haven't tested it yet- that's a good bet for a cheap platform that'll run it.
Of course a MIPS device is a lot more powerful than the ESP32.
Of course a MIPS device is a lot more powerful than the ESP32.