If you can still play the game, iirc a program was made that could recover it along with other stuff
I've tried messaging him and he hasn't gotten back to me. Hoping maybe I can get an answer on here.
So I was just going through one of my old HDD's and found an install of Blockland. It contains a key.dat file which I imagine has my serial key in it. Is there any way that's enough to prove my identity?