For those looking to splash some cash, there are tree casinos on Gran Canaria, many of which belong to the big hotels.

This casino is situated within a 5-star hotel, the Santa Catalina, which means it has all the comforts you would expect from such a rating, including a magnificent restaurant and bar. The casino takes up a whole floor of the hotel, completely carpeted, decorated tastefully and with sophistication. There are elegant ceiling lamps and sofas with tables to have a drink. Typical games are played, like roulette, classic blackjack, poker, and slot machines. Entry is free, but there is a strict dress code. 

This is a Las Vegas-style casino in the Hotel Meliá Tamarindos where you can enjoy a full range of traditional gaming activities including Black Jack, French roulette, American roulette and even slot machines. There's also a gala dinner combined with a variety show featuring acts like international ballet companies, magicians and ice-skaters. Formal evening dress is recommended. Entry is free

The third casino is located in Meloneras situated in the south of Gran Canaria, in the resort of Costa Meloneras, it stands directly on the beach front, giving fantastic views of the famous Maspalomas lighthouse and the ocean. The Meloneras beach and the natural dunes park of Maspalomas are both only a few minutes away on foot.
Gran Casino Costa Meloneras are located in an annexed building to the Hotel Costa Meloneras, and the Casino count on 17 tables, that they include plasma screens, where will be been the development of the plays, 100 vending machine and a “Mystery Jackpot”, among other things.
The Great Casino Costa Meloneras also will make available of its visitors a hall spectacles, call “Black & Red Casino Show”, a denominated restaurant “the Cupola of the Casino” and a modern Convention center.