Most games I play, I only play once. But once in a while I find a game I like so much I obsess over it and replay it multiple times. CV64 and Legacy were one of those games, I played through every character, every difficulty, and then some doing challenge runs like limiting my sue of healing consumables and mostly use the healing you get when you finish a stage to force me to truly get good especially against bosses. And they're still something I'd fancy replaying.