I feel like this is one of those projects missing missing an important "Why" section. It's an interesting project, but from the outside, I don't immediately understand why someone has done all this effort. Huge Minecraft classic fans? Programming exercises? Is it about porting to as many platforms as possible? This is the version they are forced to make to not get their pants sued off?
Yeah. Its seemingly too big for a programming exercise. Minecraft Classic isnt really broken or super limited like the targets of many open source remakes. Its not commercial. The big selling point seems to be support on really old desktop devices and iOS/Android? Assuming the mobile controls are good.
Er, isn't it? I'm pretty sure all versions of Minecraft are proprietary software that cost money.