If you get tokens on ICO, that means the ICO project has already worked ? Or you can still get tokens from failed projects ?
Even if the ICO were not successful they send you payments with a form of tokens,they can make another public sale after the presale,they can raised funds on that way.Theres always a possibility that even if ICOs were not successful they can send tokens to bounty hunters as the reward.If developers were dedicated in their job,they will let their projects grow and possibilities would be list in some exchangers.