ATLANTIC CITY - Atlantic City's once-struggling Tropicana casino seems to have found the key to success in the cutthroat casino market: keep pumping cash back into the property, and not just for things involving gambling.

The Tropicana recently completed a $40 million renovation, most of which went for non-gambling amenities.

That came on top of a separate $50 million upgrade last year.

General Manager Steve Callender says the Tropicana plans to constantly reinvest in its properties to better compete in an already intense market.

The latest work includes renovations to 500 hotel rooms; new light shows on the Boardwalk; the new Kiss Kiss A-Go-Go nightclub from club whiz Ivan Kane; a new luxury spa, and a corner market store accessible from the street.

The casino also debuted a new high-limits slots parlor.