Ive been searching around this forum for a while and see a lot of ANN threads here. But Im very interested what ICOs and projects really achieved great results. Saying "successful" I don't mean these projects that just going to launch ICO. I mean projects that have already collected money and released product.
For example, this blockchain game. They collected good money and now its one of the most popular blockchain game. Here you can read an interview with its developer
https://gameunculus.io/blog/96 (I dont send direct link to their website not to make them advertisement)
And what projects do you know?
With some pretty due diligence there are so many of them with great success which have actually managed to develop or build on the existing product over time, although, it is still understandable that there are more scam ICOs than those with projects.
At least, there are the likes of COSS, KICK or if you are looking for the safest place to want to invest, just do some diligence on the top 100 coins, and then try to put your money where your mouth is as this at least gives you some level of guarantee that this is where majority of investors have decided to put their money but all in all, never make the mistake of not doing your own research.