Overall, Casino Night Zone is a city located on West Side Island. Described as "the city of neon and pinball", it is known for its gigantic gambling machines and brilliant platforms. Slot machines and neon signs are often seen throughout the city. Golden statues and elevators are also featured in this Zone.
Sonic the Hedgehog 2
In Sonic the Hedgehog 2 (16-bit), Dr. Robotnik invaded West Side Island and its regions, including Casino Night Zone. He kidnapped the Animals that lived there and used them to power his Badniks and help him find the seven Chaos Emeralds hidden somewhere on the island. Casino Night Zone would be the fourth Zone Sonic the Hedgehog and his new friend Miles "Tails" Prower visited during their mission to free the island and stop Robotnik's plans. At the end of the Zone, Robotnik battled Sonic and his new sidekick with his Egg Claw, but was defeated, thus forcing him to flee.
Sonic the Fighters
In Sonic the Fighters, Casino Night was the arena where the hero contestant fought Fang the Sniper (or a clone of himself made by Dr. Robotnik if the player is playing as him). After contestant defeated their opponent, they gained the magenta Chaos Emerald.
Sonic Generations (Nintendo 3DS)
Casino Night was the second area Modern Sonic and Classic Sonic paid a visit to after ending up in White Space. By speeding through Casino Night, the Sonics were able to fix space, thereby restoring Casino Night from its lifeless state. When the Time Eater later got destroyed, Casino Night was seemingly returned to its rightful place.
Other game appearances
Sonic Drift 2
In Sonic Drift 2, Casino Night is the fourth track of the Purple Chaos GP, coming after Dark Valley 1 and before Desert Road 1. The player has to complete three laps of the track to finish, and the fastest racer gets a Chaos Emerald.
Casino Night's track is littered with oddities; mini ramps that throw one up in the air, springs that are actually Bumpers, and Reverse power-ups. Most of the time, there is at least land on either side of the track, although there is one section where this is replaced by empty space which is best avoided falling into.
Sonic Generations (console/PC)
In the console/PC version of Sonic Generations, Casino Night appears as a DLC for the game. Unlike its Nintendo 3DS version counterpart, this version of the stage is a Pinball-styled stage, full of secrets. The main goal of it is to collect as many Rings as possible, which can be obtained from the local slot machine.
In other media
Adventures of Sonic the Hedgehog
In the Adventures of Sonic the Hedgehog television series, Casino Night Zone was an oversized casino owned by Dr. Robotnik, which was hooked up to a CPU designed to force every machine in the house to lose no matter what, and turn the mobians into the doctor's personal slaves. However, when Sonic reprogrammed the unit, this caused the mobians inside to win real money (due to Grounder not wanting to welsh on a bet) and bankrupted the casino.
Books and comics
Sonic the Hedgehog (manga)
In the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics, the Casino Night Zone was originally a casino built by Dr. Robotnik on Mobius, although it was destroyed by Sonic. It was later re-built by the doctor, only to be abandoned. Two years later, Mammoth Mogul took over management of the Casino Night Zone.
When the Super Genesis Wave re-wrote history, Casino Night Zone appeared as a permanent Zone located on Westside Island, with its past being virtually identical to its game counterpart's. It is currently owned by Breeze Media.
Sonic the Comic
In the Sonic the Comic series published by Fleetway Editions, the Casino Night Zone is one of the many Zones on Mobius. It is a large, urban region, devoted entirely to the leisure industry (especially casinos). At first, the Zone was ruled by Dr. Robotnik, but the money-greedy Max Gamble eventually became its de-factor administrator. Since its introduction, it has held a strong element of illegal activities.
- Casino Night Zone is the third most-recurring location in the Sonic series, behind Green Hill and Seaside Hill.