I think this one would be applicable, especially considering how obnoxiously broad patent claims can be. it’s annoying to look through all of their patents because by Jove they make a lot of casino machines.
This one looks to be more related to general gameplay rather than the logic of it, but it did expire in 2019 so I don’t think that’s too relevant to this anymore, but would have been when Mac said that back in 2017.
So like, you can ask to use the patent, but Konami probably wants money in return for licensing it out. If you don’t as far as I know that sorta goes against what’s stated in 35 U.S.C. § 261, wherein it says they’re like personal property–and you sorta just can’t roll up and start using someone else’s property without permission, and even more so when you’re profiting off of it to some extent. Well I guess you kinda can, but then you kinda get in trouble when it comes to 35 U.S. Code § 271. § 271(d) also mentions a bit about licensing. Also i’m silly little crusader guy not a lawyer.