FreeOnlineGamesFinder.Com or FreeOnlineGameFinder.Com ? What is better for SEO? It shows that Free Online Game gets a lot more searches but I guess using Games accounts for the plural and singular.
Considering the domain is long and most likely won't remember I'd choose option C, find a domain name that is brandable like pogo.com, gamewinners.com, etc. You do not have to have keywords in your domain name to rank #1 for those specific keywords.
Maybe, but for now I want to just look at the SEO prospective. Even though the domain is long, I think it's plenty memorable and serves its purpose.
You build websites and web pages for your visitors... not search engines. Picking a domain based on the SEO advantage will have not the effects your expecting when it comes to returning visitor turn around rate. Humans first, search engines second.