I have observed several times but i think the hype of these projects is over quickly and their development process is not good that's why investors don't store these tokens permanently. For example, dogs, grass, x, major, memefi, hamastar and many more. There are lots of tokens allocated only for airdrop like 70% so these tokens get down quickly after entering the exchange. Follow the chart i presented and research from cmc and you will understand that all these gaming projects are marketed only to make money. I think they have absolutely no development activities and these project will not last long.