The best bet nowadays is to stick with ICOs from veterans in the industry that have a proven track record and already offer some products/developments at time of ICO.
I'd like to share a project I personally work with, called XAYA, which, as an investor, I recognize meets all the benchmarks required of a solid ICO. XAYA is a blockchain dedicated to blockchain gaming that addresses all the issues faced by gaming on Ethereum and other blockchains. This includes a number of unique features, of which I will list a few:
* Language agnostic: publish games in any language, including via Unity SDK
* Game Channels: state channels specifically for online gaming that enable 100% blockchain gaming that is real-time and infinitely scalable
* Major industry support: First game (Treat Fighter) from TrickyFast Studios is in open beta, Soccer Manager (25 million downloads) is launching Soccer Manager Crypto in December.
This project comes from the inventors of blockchain gaming in 2013 via Huntercoin. It's network is already live and it's already being used. ICO is listed on Liquid exchange, which means automatic listing upon completion of the sale. You can check it out here:
https://app.liquid.com/ico-market/CHIIf you are curious/skeptical about the tech, the CTO delivered a comprehensive presentation at Blockchain Games Summit recently:
https://www.youtube.com/watch?v=wMd9mvc8pqA