I don't think that NOT will perish away, but time will tell. It's the biggest of them all, after all, the game that started the trend on TON and what everybody follows around, its footsteps are everywhere. It isn't an indicator of longevity, but it's going to be in the heads of people for a long time, and that matters.
Somehow it will be. Imagine the trend of almost all other projects who followed the taptap of notcoins. Its really an amazing hype made by notcoin and now almost all are grabbing the same style to boost community and showcase their airdrop. Yeah, TON is booming out from these, but it's not a good indicator to go into all of them, more like to invest more time into them to search for the ones that are worth it
I believe in Blum and Dogs, for example, but I don't play much into them, just watching the updates from time to time.