Not sure why you put EPL or La Liga games into this.... Should be just Serie A and European games inter plays in. Fuck other comps, this is an Inter Forum, and has no bearing on other leagues.
This game exists since the start of the forum, and those are the rules defined there. 13 games tops, all Serie A and inter games + derbies from EPL and Spain. I didn't make the rules, i started counting since last year.