My sister corrupted my favorite game. She pressed fast forward on the tape deck while it was playing (and loading). I think that stretched the tape, because after that the game wouldn't load anymore, it would error out.
This happened to me in the early 80's with the family's Tandy Color Computer 1. We didn't have a disk drive, just loaded things using tape drive.
As an aside, I think the modulation used was a simple frequency shift keying, with likely no error correction.