Caine Monroy

The adorable kid from the Caine's Arcade viral video -- who couldn't afford arcade games and had to settle for cardboard boxes -- is about to start raking it in. We found out he just inked a deal with one of the biggest talent agencies in Hollywood! According to legal docs filed in L.A. Superior…

The cardboard-cutting days are over for that kid from the viral 'Caine's Arcade' video -- because TMZ has learned, he's finally getting a real-life arcade game ... worth upwards of $4,000. In case you haven't seen the video (below) -- a 9-year-old kid named Caine Monroy built an entire arcade at…