[tscherno]

In an interview I can't find anymore a developer from Farbrausch said that they used such a method to optimize the .kkrieger demo and ended up having a bug in the main menu because while recording the coverage the user never scrolled to a certain main menu item. So once you scrolled there you couldn't scroll up anymore.

[Waterluvian]

This reminds me of Naughty Dog overwriting standard library functions to gain more RAM for Crash Bandicoot. They would just “delete a function and see if the game still worked.”

[speps]

See my comment in the same parent: https://news.ycombinator.com/item?id=33575452