Depends on the project, if its on NFT games I think those Rewards token should also have a burning mechanism so its value will continue to rise and not drop that much. I'm taking SLP as an example here, that is a reward token if  you play the game and look at its total supply compare to burning mechanism, the result is very bad if some rewards token do the same thing like SLP. Rewards token are quiet not ok for me if you are planning to invest for long term, better to go for the mother token of that project.