Regarding #1, is it fine to post there if it's possible to win Bitcoin via PvP and whatnot, or what that be considered Gambling?
For clarification, no ICO or anything, just a game, however there will be incentives offered.
If they'd need to bet BTC to win them, then yes, it pretty much still falls under the gambling category. Can you add more details on the "incentives" and "investment area" part?