Not really a glitch, but rather a theory, so here goes:

Dive into a Gran Turismo 2 theory about achieving 100% completion. Learn how race wins might contribute to your percentage and what could be involved.

Alright, so this isn't exactly a glitch, but more of a theory I've been kicking around about how to hit that elusive 100% completion in Gran Turismo 2. It's based on my own experience, and until someone tells me otherwise, this is what I'm sticking with.

Here's the idea: every time you snag a win in a simulation mode race for the very first time, it bumps your overall completion percentage by about 0.45%. Obviously, if you race the same event again and win, it won't add to your 100% goal. It's that initial victory that counts.

I managed to get to 98.2% completion without any cheats – pretty good for an old-timer, right? When I was looking at what was left, I noticed that the four 'event generator' races are the only ones that don't give you a trophy. Now, you know that 4 times 0.45% equals 1.8%. And guess what? That's exactly the difference between a perfect 100% and the 98.2% that seems to be our current 'maximum' practical completion.

So, could we actually hit that theoretical 100%? It's a big 'if', and it depends on what GT2 might be asking of us. Would we need to win all four of those event generator races with every single car we own? Or maybe even every car available in the game? I've heard there are around 450 cars in the North American version alone. Or perhaps we'd have to win every possible randomly generated race combination with every car? Man, the math on that is wild.

And don't even get me started on the fourth event generator race, which is the toughest one. It actually consists of five races. Would we also need to beat every single permutation – not just combinations, but actual permutations – of those five races with every car? I haven't even begun to crunch those numbers, but I can tell you this: long before we could ever possibly win that many races, a new Gran Turismo game (like GT2000 or whatever they'll call it) will probably be out, and we'll both be busy playing that instead.

Big thanks to Paul Johnson from Sikorsky Aircraft for sharing this theory!