What's the most money ever won at a casino? Kerry Packer's $20 $40 million in MGM Grand in 1995 is the largest sum won at a casino so far. That night Packer investedR$250,000.00 on eight different blackjack hands to reach it.

Dennis Nikrasch (September 12, 1941  2010), also known by the alias of Dennis McAndrew, was a Vegas slot cheater and a former locksmith who was responsible for spearheading the biggest casino theft in Las Vegas history, by grabbingR$16,000,000 from rigging slot machines over a 22-year period.