Despite what is all saying here I think if you are so much into games and you wanna do this
try pre-icos, but pay attention!
look at the project parterners/ investors, develepors, their ideas/plan.
I think I have what you are said and what's the guy looking for.
Ludos Protocol have all you said above.
Check at their parteners SoftBank and Du Capital, and more
They cover all the rest of aspects cause they target gamers, developers as they developing an ecosystem, blockchain blockchain infrastructure around the gaming community.Give this a try it maybe what you are looking for.