so what if you moved the site OR just the web front end?

IP Owner: Webzilla B.v
Owner Full IP Range: 88.85.64.0 - 88.85.95.255
Owner Address: Keienbergweg 22 @ 1101 Gb, Amsterdam, Netherlands
Owner Country: Netherlands

This ends up your site and host is located at the https://datacenter.com/contact data center in The Netherlands.
I can only assume you knew that and are aware of that but we do all have our own skills and I have been watching you and after this post and " I talked to a lawyer " and because you said " Gambling is not disabled completely in my country, there are four areas where you can legally found casino. But I don't know where is my Russian hosting located. Because of that I used foreign hosting for this project. " I can only assume since you rent a VPS from https://fozzy.com/us/about.shtml whom has rack space and or cage space and resell's vps hosting out of one of datacenter.com's location's your's just happen's to be where I listed above. They have to abide per Wilmington, Delaware USA law. Myself I can offer Washington state USA and I understand your worries as I worked at CWIE/CCCBILL and similarly porn is not allowed at all let alone many data centers themselves globally so like gambling, you cannot just put up a porn site , you need to know not only the TOS for the hosting reseller where you rent your VPS/server but also per their host data-center. So far looks like it's a non issue. Kind of like each USA State and each has it's own crypto currency law's. So far I could not locate where gambling sites are a violation of TOS so maybe you should contact them via email and ask as you are hosted in The Netherlands just like gridcoinstats.eu and gridcoin.ch are both out of Germany and www.gridcoin.us is actually out of Canada as the domain and TLD are meaningless and the IP and IP Transit along with their registered address matter's not postal.
So far looks like you are in the clear. BUT if you are that worried I was considering hosting the front end homepage and you could have it linked to and code it to call up pages from your current vps hosted location or just not worry since you are not violating any laws.
I hope that helps , I just thought your idea and game had potential and could bring even a little extra added value to Gridcoin and the community and thought I could lend a hand.