The problem right now is that scammers are so many unlike the earlier stages for the blockchain idea. But there still are gems worth investing in.
The top ONE altcoin to invest in: Mevu. Mevu uses smart contracts on the Ethereum blockchain to immutably and transparently store players funds and information. This makes it easy to provide players with confidence that their bets will be executed securely and quickly.
Check out the project via the links in my sig.