There are sixteen slot machines in the Game Corner, with four of them having people already seated at them.
One to three coins can be put in the slot machine each play. One coin will only count the center row across, two coins will count all three rows across, and three coins will count all three rows across as well as both diagonals. The reels stop spinning when the player presses the A button.
Note that order matters.
3 coins, power
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As the player gets more triple lightning bolts, they are tallied up in the power meter at the top of the screen. At a Reel Time opportunity, an animation of a Pikachu charging up a spinner appears. When Reel Time fails (usually when there are very few lightning bolts), the spinner explodes and nothing happens. Otherwise, the spinner will stop on a number up to 5, and the player will earn that many Reel Time spins. The power meter also resets to zero.
As Reel time is so short, what happens during it is not yet precisely documented.
During Reel Time, all the reels will stop exactly where the player directs them to; unlike normal spins, the reels will not "slip" to give or take away prizes. If the player has just lost the previous spin before a Reel Time spin, the reels will also spin quite slowly (very slowly in Emerald) to allow the player to stop them precisely. If the player wins any prize, the reels speed up to normal for the next spin, which does consume one of the Reel Time spins. If the player loses, the reels slow down again. If the player creates a big bonus (three red or blue 7's, for 300 coins), Reel Time immediately ends no matter how many spins were left.
As a patron at the Game Corner notes, the maximum the player can manage to earn (through five Reel Time spins) is four regular bonuses then a big bonus, totaling 660 coins. However, since the reels speed up after a win, it may be more useful to attempt two regular bonuses and a big bonus (i.e. regular bonus, loss, regular bonus, loss, big bonus), for 480 coins.
The roulette wheel has twelve spaces. Each space has one of three colors and one of four Pokémon: yellow, green, and purple; Makuhita, Azurill, Skitty, and Wynaut. By betting where a ball will land, players can win Coins.
Bets can be placed in three different ways: by single space, by color, or by Pokémon. Winning a bet by space returns twelve times as much as was originally bet, by Pokémon yields four times the amount bet, and winning by color gives three times as much. Each ball remains on the wheel until the wheel is reset, once six balls have been put into play. This changes the odds for future bets, as only one ball can fit into each space.
A bet on a Pokémon or color increases its payout when some of the possibilities are taken off the board. The multiplier of the payout is always equal to 12 divided by the number of empty spaces in the bet type. For example, if a bet has already landed on a Wynaut, that row will have a ×6 multiplier instead of the usual ×4 multiplier.
There are two roulette wheels, with one having a wager of 1 coin, and the other having a wager of 3 coins. On the Game Corner's Service Day, the 3-coin table has a special rate of a 6 coin wager instead.
Sometimes the ball may get stuck between two balls which have already settled. When this happens, either a Shroomish will drop down, causing the ball to fly up into the air and land in another spot, or a Taillow will pick it up and, after hovering with it for a bit, drop it into another spot.
Strategy and probabilities
Because the payouts are calculated based on an empty board, the odds favor the player as the more balls fill the roulette wheel. For example, on an empty board, the payout of a single space (×12) matches its probability (1/12). After five spins, the payout remains the same, but the probability of a win increases to 1/7, giving the player a 71% edge on the final spin. This advantage (30.64% on average) in odds favors the player in the long run, but the small bet amounts inhibit winning fortunes quickly.