Honestly, it's fair game. I don't expect every studio to have the source code handy and someone who knows how to build and modify the game anymore. If the crack

Honestly, it's fair game. I don't expect every studio to have the source code handy and someone who knows how to build and modify the game anymore. If the crack does the job, I can empathize. Inversely, it's not like the crack was made just out of educational curiosity. At one point it might have hurt sales... now somehow it helps. Not like the group would have a moral high ground to claim their copyright was violated. Though the idea is fun.