The best adventure games are 2D because random walks there always return (Pólya). Not true in 3D, so puzzle games there end up either too easy or too difficult.

Lots to dig in to here — thanks for posting. Internet Archive says the site has been around since ~2010, which is a likely indicator that its current iteration is handmade :)

This is nice. It's a testament to the pixel art made in the past with very limited resources (colors mostly).

Fun "easter egg" if you actually punch in the konami code (Up Up Down Down Left Right Left Right B A) on a keyboard.