The best thing that investors can do is to play and accumulate tokens, at the same time. Gaming projects has to create a big community of gamers to keep the economy healthy (selling pressure will always be bigger than buying pressure), but this only can be done with a Free to play mode that attract players continuously and making them pay for something like skins, special items... "Arker, The legend of Ohm" is a good example of it.

P2E has really difficult economies, but it can be really profitable in the long term when the team has strategies about burning tokens (deflation), circular economy, NFT control (preventing inflation), etc.