The Gambling 3 is a magazine in Dead Rising 2 and Dead Rising 2: Off the Record. It significantly increases winnings when gambling. It is located in the Silver Strip, Shamrock Casino (N106), on a counter behind the bar. In Dead Rising 2: Off the Record, the magazine is located in a safety.
Here is a list of all the Magazines I have found while Playing Dead Rising 2: Off The Record. If you find any more let me know and I'll add them to the list.
Americana Casino
Magazine (Drinking) - (HEALTH +) Drink multiple alcoholic drinks without getting sick. = On the ledge after Jumping across the square lights from Beenie Jack's BBQ Shack, Next to a Money Case, Battleaxe, Orange Juice and Giant Stuff Rabbit
Magazine (Gambling 2) - (GAMBLING +) Significant increase when playing Gambling Games. = Beenie Jack's BBQ Shack A101, 2nd Floor on the counter near the Square Lights.
Atlantica Casino
Magazine (Juice Boost) - (ITEM +) Consumed Juices effects last twice as long. = On top of the Jelly Fish walkways next to a Training Sword, by the Poker Room.
Food Court
Magazine (Health 2) - (ITEM +) Food item's health restoration boosted by 100%. = Hungry Joe's Pizzaria F107, On top of the Fridge in the back of the store, Jump on the counter to reach it.
Fortune City Arena
Magazine (Hand to Hand) - (SKILL +) Bare-Handed attacks have a significant boost in power. = In the Security Room on the left hand side next to a dead Security Guard.
Fortune City Hotel
Magazine (Domestic) - (ITEM +) Furniture items have three times the durability. = On a small table on the left hand side of the lobby.
Fortune Park
Magazine (Horror 2) - (PP +) Get a 25% boost from defeating zombies. = On top of the scaffolding next to the main doors to the Fortune City Hotel.
All Gambling Magazines Dr2 Off The Record
Palisades Mall
Ground Floor
Magazine (Skateboarding) - (ITEM+) Gain ability to do a new trick while on a Skateboard. Skateboard durability lasts 3 times longer. = Ultimate Playhouse P103, near the main counter next to a Giant Stuffed Bull.
Magazine (Gambling 2) - (GAMBLING +) Significant increase when playing Gambling Games. = On the second floor of the Grotto on the rear left hand side table near the Slide.
2nd Floor
Magazine (Health 1) - (ITEM +) Food item's health restoration boosted by 50%. = Stan's Large Print Books and Mags P206, Near the front of the store.
Magazine (Psychos) - (PP +) Get a 25% boost from defeating psychos. = Stan's Large Print Books and Mags P206, In the middle isle of the store.
Magazine (Combat 2) - (ITEM +) Get a 10% boost to PPs earned from weapon kills. = Stan's Large Print Books and Mags P206, In the right hand side isle of the store.
Magazine (Photography 2) - (CAMERA +) Get a 10% PP boost from Photographs. = Robsaka Mobile P217, On the counter next to the Cash Register.
Gambling Magazines Dr2 Off The Records
Platinum Strip
Magazine (Driving) - (ITEM +) 4 Wheel vehicle durability will last three times longer. = Paradise Platinum Screens S104, On top on the Showtimes Sign for the Paradise Platinum Screens.
Royal Flush Plaza
Ground Floor
Magazine (Bargaining 1) - (ECONOMY +) Will lower the cost of tiems in the pawn shop by 10%. = Yesterday, Today & Tomorrow R114, On the front end of the kiosk on the counter.
Magazine (Blades) - (ITEM +) Edged weapons have three times the durability. = Yesterday, Today & Tomorrow R114, on the right hand side of the kiosk on the floor.
2nd Floor
Magazine (Leadership) - (SKILL +) Survivors are more effective while in Frank's party. = Rags Mags R212, In front of the Fiction Book Case.
Magazine (Sports) - (ITEMS +) Sports items have three times the durability. = Rags Mags R212, In front of the Self Help Book Case.
Magazine (Game) - (ITEM +) Entertainment items have three times the durability. = Rags Mags R212, Up against the main Book Shelves on the left side of the store.
Silver Strip
Magazine (Combat 1) - (ITEM +) Get a 10% boost to PPs earned from weapon kills. = Luaii Wauwii N105, on the outside rear mini bar.
Magazine (Rescue) - (PP +) Get a 25% boost to PP from survivor related activities. = One Little Duck Bingo N102, at the rear of the bingo hall by the Bingo Ball Cage.
Erotic Magazine - (PP +) Get a 10% boost to PP from female survivor related activities. = Hot Excitorama N110, on the shelving on the right side of the store.
Slot Ranch Casino
Magazine (Erotica) - (CAMERA +) Get a 100% boost from erotica photograph PP. = In the Mens Bathroom in the open stale at the end.
Magazine (Combat 3) - (ITEM +) Get a 10% boost to PPs earned from weapon kills. = On the couch in the Security Room by the Vault.
South Plaza
Magazine (Building) - (ITEM +) Construction items have three times the durability. = On the upper walkway across from Ultimate Playhouse.
Underground
Magazine (Horror 1) - (PP +) Get a 25% boost from defeating zombies. = In the Americana Casino's Underground Loading Dock, by some Construction Hat's, Folding Chair's and a working Cash Diet Slot Machine.
Magazine (Bikes) - (ITEM +) Bike durability will last three times longer. = Near the Yucatan Casino Ramp, On some boxes in the left hand corner. (In Story it Cannot be accessed until Case 7-2)
Uranus Zone
Magazine (Photography 1) - (CAMERA +) Get a 10% PP boost from Photographs. = On a small table in the First Aid Station at the side of the UFO CRASH Ride.
Magazine (Bargaining 2) - (ECONOMY +) Will lower the cost of items in the pawn shop by 10%. = Fortune City Bank U109, Inside the Vault in Security Box #145. (Story Mode Only)
Magazine (Gambling 3) - (GAMBLING +) Significant increase when playing Gambling Games. = Fortune City Bank U109, Inside the Vault in Security Box #304. (Story Mode Only)
Yucatan Casino
Magazine (Amusement) - (ITEMS +) Toy items have three times the durability. = Baron Von Brathaus Y101, On the bar by the Employees Only sign by the kitchen.
In Dead Rising 2: Off The Record for the PC, PS3, and Xbox 360, there is a method you can use to get money extremely easily.
First, you need to get a little money collected up. Use the hacker (flashlight + computer case) on an ATM to get a quick $10,000. Another method you can use is to go up to any slot machine that has a pile of cash in front of it and play it five times in a row for guaranteed wins. You’ll also want to grab a few decent combo weapons, because you’ll need them later.
Next you’ll need to collect the two Gambling Magazines which will boost your odds of winning at the slot machines.
Gambling Magazine 1 – In Palisades Mall, on a table above the pool bar near the slide
Gambling Magazine 2 – On the top floor of Bennie Jack’s BBQ Shack in the Americana Casino, sitting on a ledge on the left
Gambling Magazine 3 – In Uranus Zone Bank, Security Box #304, the key to the box is sitting on the unfinished wooden ledge in Fortune Park to the right of the Fortune City Hotel entrance
Finally, head to Slot Ranch Casino and look for the giant slot machine on the left wall toward the north eastern exit. There is a spot to save your game nearby so I suggest doing that.
Clear the area of zombies as much as possible, because the winning sound from the slot machine will attract them much faster than normal. Now start betting on the giant slot machine hitting the $1,000 bet button on the right. With the magazines you’re carrying, you’ll start hitting 25k, 50k, and 100k quite a bit. Sometimes you can hit 100k every few minutes, or even back to back if you get lucky.
Using this method I went from 100k to 1.8 million within about 30 minutes of playing. You’ll hit some dry spells for a while, so just keep grinding this machine until you have however much money you desire.