Which was sometimes frustrating, but when they are funny and good bugs it’s amazing.

There’s a reason that so many speedruns on older consoles use the Japanese cartridges, because those versions came out first and have exploitable glitches the western release later fixed.

Bugs at that time were almost never totally game-breaking either, since that would have been a nightmare recall for the publisher, and so the final builds were tested a lot more intensively than games now.