cryptofantasysports.com
Sign up with my refer link above and get started with the free roll tournaments!
There are weekly and daily free tournaments as well as a wide variety of paid contests. The way it works is you create "teams" by selecting 5 different crypto currencies (currently from the top 150 on coinmarketcap) to invest a theoretical $20000 USD in each. At the end of the contest the team that has generated the highest return, or on a totally red day the team that has lost the least amount of value in USD wins the contest and recieves real NLC2 coins.
Its a fun way to bet on the market without risking much, here is what to expect as far as ui
I have posted about this site before as I love it for fantasy NFL so definitely sign up if you are interested in that or other fantasy sports also.