Holiday Palace Casino
SihanoukVille (and Cambodia's) longest running casino.  Across from Victory Beach.

New Peak Casino
on top of Victory Hill.  Smaller and well appointed.  Has a large Chinese clientele.

Fortuna Casino
on the Golden Lions Circle.  Formerly the Golden Palace Casino, has completely renovated, and boasts the largest casino in town.

Golden Sands Beach Club Casino
SihanoukVille's newest casino.  Featuring the most modern gaming machines, a short walk to Ocheteaul Beach and a swimming pool.

Also, downtown SihanoukVille at a new location is Cambo Six sports betting shop.

We can't say here, but a few bars (Big Fish, Rock Hard & Lions the color of Gold) have Texas Hold'em Poker games on certain days of the week.