There are 4 legal Casino avenue that you can go to in Singapore.
2x Casino on the land and 2 Casino on the sea.
MBS (Marina Sands Bay)
Address: 10 Bayfront Ave, Singapore 018956
Direction: Alight at BayFront MRT (Downtown Line, Circle Line)
RWS (Resort World Singapore)
Address: 8 Sentosa Gateway, Singapore 098269
Direction: Alight at HabourFront MRT (North-East Line, Circle Line)
Sentosa Transport Operating Hours
Train: 7am to 10pm
Bus: 7am to 10pm
Beach Shuttle: 9am to 7:30pm
Aegean Paradise Cruise
Casino on a small cruise ship, boarding at Tanah Merah Ferry Terminal (TMFT) or Singapore Cruise Centre
Address: 50 Tanah Merah Ferry Road, Terminal No.1-11, Singapore 498833
Direction: Alight at Bedok MRT or Tanah Merah MRT Station and take SBS Service number 35 to Tanah Merah Ferry Terminal.
Reference:
https://www.aegeanparadisecruise.com/
https://www.newcenturytours.com.sg/
https://www.casinocity.sg/singapore/aegean-paradise/
Dream Cruises
Casino on a big cruise ship, boarding at Marina Bay Cruise Centre Singapore
Address: 61 Marina Coastal Drive, Singapore 018947
Direction: Alight at Marina South MRT Station and take SBS Service number 400 to Bay Cruise Centre Singapore.
Reference:
https://www.dreamcruiseline.com/