you should to think about it twice before investing in cryptocurrency, it is not ponzi scheme which promising you to be rich as quick as possible. it's totally high risk to involve in cryptocurrency, it's not a game. but they are profitable at the same time. if you want to invest in cryptocurrency, bitcoin should be the best as i recommend to you. i don't recommend to invest in ICO now. but if you want to invest in ICO, make sure you have done to analyze the ICO very deeply. sometime ICO is a way to earn high profit. even thousand percent of profit. but bow there so many ICO that being scammed and to avoid that, should be investigated and do research.