Roulette
European single-zero roulette (house edge −2.70%), played with your medals from the Medal Game Center. Bet, spin, and see the Martingale system fail under the law of large numbers.
Roulette now plays with your medals from the Medal Game Center, the same medals every game there uses. The chips this table used to hand out are retired. Go to the Medal Game Center
- (none yet)
Hot / cold numbers appear after 10 more spins.
Medals are for playing the games on this site only. They are not money: they cannot be bought, cashed out or exchanged for anything.
These are your medals from the Medal Game Center: every game there plays with the same ones, and they are reset only there. Go to the Medal Game Center
Pick how many medals a tap adds, tap a betting area, then SPIN. The medals are taken when the wheel spins; at least 1 a bet and up to 99 on one spot.
Inside bets: tap the border between two numbers = Split (17:1), a point where four meet = Corner (8:1), the small boxes along the numbers = Street (11:1) / Line (5:1).
Keys: Space or Enter spins · R rebet · U undo
What is the Martingale system?
Double your bet after every loss on a bet that wins 1:1 (red or black, say). In theory a single win wins back everything lost so far, plus the first bet.
In reality (1) the most a spot takes and (2) a limited number of medals mean a long losing streak runs you out.
Set up the run below and press "Run simulation" to see, on a European wheel (green 0, EV −2.70%), how often the strategy runs out of medals. It plays with pretend medals: yours are never touched.
House edge convergence
Bet one medal on the chosen bet, every spin (pretend medals: yours are not touched). Early on the return swings wildly, but the law of large numbers drags it toward the theoretical −2.70% — no matter which bet you pick.
This is why "systems" don't work: the edge is baked into every bet equally.
FLOOR JACKPOT
+ 1% of every medal played goes to the floor jackpot: the site adds 1 medal for every 100 you play, on top of what you play. Nothing is taken out of it, so this machine’s own return is exactly as shown.
Each medal played is also a 1 in 150,000 chance to win the whole pool, which starts again at 1,000 medals once it is won. In the long run it brings back 1.67 medals for every 100 played, but only in the long run: most players never win it.
It is for players who are signed in and have joined the floor, on the first 20,000 medals each plays in a day (Japan time) at the linked machines, with one floor jackpot a day at most.
Like the rankings, the floor jackpot is for fun. The medals played that feed it are what players’ browsers report: the site checks each report against what that machine allows, but it cannot prove it. The draw itself is made on the site’s server, never in a browser.
Linked machines: Medal Pusher, Slot Machine, Calico Janken, Roulette & Martingale, Three Card Poker, Big Catch Harbor, Mini Turf Racing, Ball Bingo, Star Festival Big Wheel, High & Low Ladder, Moonlit Sic Bo, Whale Isle Sugoroku, Candy Shop Medal Maze, Video Keno, Hot Spring Smart Ball, Goldfish Lantern Pachinko, Cherry Blossom Carousel, Onsen Shooting Gallery.