Hello, I'm a unity game developer and reskin artist. I've worked on several games for unity platform to help publish on android and iOS. Endless runner, FPS action, 2D kids games, gambling games, racing games, multiplayer games.
As far as your need for gambling games, I've Teen Patti, Roulette multiplayer, slots, Texas Holdem Poker Multiplayer and a few that are not gambling but similar which is billiards multiplayer, ludo multiplayer and checkers multiplayer. Msg me so we can dicuss your reskin, thanks :)