Based on mark's reply, here's the only platforms that offers no KYC (based on their T&Cs)

1. Anonibet
2. BetJa
3. FreeBitco.in


But be careful with non-KYC as they don't have physical license and can have issues once you would withdraw a lot of money, yet still enjoyable IMO. If you were to ask whether or not do a KYC, its up to you. But if you will be a casual player in online gambling platforms, then I guess KYC is a must -- as it also ensures that you could have no issues with any deposits or withdrawals at all knowing the fact that you provide your information.