Hi guys! Just joined to share my research.
Being from Estonia, a tiny former soviet block country, now an IT haven where Polybius and Hashcoins are registered in, I know which sources to check. The Polybius.io webpage is registered to Polybius Foundation OÜ, a company that doesn't have much information on the register at the moment, but It was just registered 4 months ago. Source:
https://www.e-krediidiinfo.ee/14202836-POLYBIUS%20FOUNDATION%20O%C3%9CThough the Polybius Foundation OÜ company doesn't seem to have much information to go on, the executive team is the same collective that started hashcoins.com - registered as Hashcoins OÜ. Hashcoins has 14 employees, a yearly FIAT turnover of 153 525.00 EUR (period 01/12/2016 - 28/02/2017) and has payed a total of 38973.54 in state and payroll taxes in Q1 of 2017. Admittedly, that doesn't seem huge, but given that the median monthly wage here is ~720 and that they probably don't convert the majority of their assets to FIAT - not too shabby. The company also has a 5/5 star rating on innovation, personnel performance, social responsibility and quality of product/service. Source:
https://www.e-krediidiinfo.ee/12490015-HashCoinsTaking into consideration that the execs all have identified themselves on the Polybius ICO team page and they have an actual successful registered company for which they are juridically responsible for, I'd say there is no doubt about them being legit. Looking at the companies long term goals and the whitepaper it seems obvious to me that IF they succeed in their endeavors they will become game changers as the system would bring a lot of new funds to the crypto scene. At least if it all goes belly up, I'll know which bus to hop on and which doors to bang on

After all the talk about Hashcoins being a scam I fail to see how the company can still be functional and successful while giving employment to 14 people... thinking of calling them up to see if they are interested in an interview.
You should ALWAYS do your own research and NEVER - EVER blindly invest money you cant afford to loose, but if you appreciate the tiny tip I just gave you, I wouldn't mind being tipped myself

BTC - 1DRgD8UKdy32GKBbuJ7h3rWTJEKQjyZEV4
Thank you and have a nice day!