The equivalent of an extra 240 poker machines are part of the SkyCity casino deal, with gambling opponents warning they could lead to new addiction problems.
The boost in numbers comes from the inclusion of "automated tables" in the SkyCity deal. The 12 extra tables allow up to 20 people at each of a cluster of new machines to play games from a central computer.
"They are de facto pokies," said Dr Fadi Anjoul at the University of Sydney's Gambling Treatment Clinic, which is experiencing a surge of problem gamblers who gambled and lost big on automated table games.
"It looks like a different game but the engine inside will be almost identical."
The final deal has yet to be hammered out between the Government and the casino although a "heads of agreement" released last month revealed the concessions. SkyCity and the Government are up against a mid-June deadline on negotiations over the changes in the gambling law.