Oh no! I'm not sure what could have happened there. I don't do any freaky stuff with the engine, I don't think.
Can you tell me when exactly this happened? Was it right at the start? And are you on Windows or Linux?
Viewing post in Curse of the Cursor jam comments
I have windows. I played up to the third time you encounter the thwomp esque laser shooting thing. After I finished the game, instead of taking me to the next level, it frooze. And after a few moments, I tried alt+f4 to force close the program, but that didn't do anything. I used Ctr+Shift+Esc to open task manager, and the cursor froze. After some time, I hard turned off my laptop.