A friend of mine invested in Crypto-Games.net ethereum bankroll a few months ago, and this post will evaluate those returns over this timeframe.
He deposited 27.85134771 ether on October 5, 2017 and he now has 28.42479382 ether, a gain of 0.57344611 ether.
To find the time weighted rate of return, I will divide 0.57344611 by 27.85134771, which is 2.05%. Then I will apply a factor of time. There have been 26 days in October, 30 days in November, and 17 days in December for a total of 73 days since he made his investment, divided by 365 days in the year equals 20% of the year. So I will take 2.06% divided by 20% of the year, to get an annualized rate of return of 10.29%.
10.29% rate of return is a high rate of return in the fiat world, but I guess this is commensurate with the risk of investing in an bankroll of an online casino running on ethereum? Another thing to keep in mind with this rate of return is the investor also gets the ups and downs of the price of ethereum since his unit of account is US dollars.