But would there be any problem

Nobody can answer that for you for sure. Cloning gameplay seems quite safe for now, but there're efforts to fight this (here's a blog discussing this topic). The question is, how unique is the gameplay you want to clone ? Think about shooters, you know, running around with guns and shooting enemies, this game play has been copied 1000 times.

But would there be any problem

Nobody can answer that for you for sure. Cloning gameplay seems quite safe for now, else zynga would be gone for a while, but there're efforts to fight this (here's a blog discussing this topic). The question is, how unique is the gameplay you want to clone ? Think about shooters, you know, running around with guns and shooting enemies, this game play has been copied 1000 times.