Firework Ball Tower
The big machine of the festival floor: a steel ball goes up the lift to the top of a glass tower and comes down five turning discs. UP takes it on, OUT ends it, and only a run that goes UP all the way reaches the jackpot.
Pick
Keys: Space or Enter starts · ← → change the bet · S skips once the ball is up
Medals are for playing the games on this site only. They are not money: they cannot be bought, cashed out or exchanged for anything.
Your medals are the medal center’s, shared by every machine there. Medal Game Center
Last runs
No runs yet.
This visit
- Runs
- 0
- Medals played
- 0
- Medals won
- 0
- Net
- 0
- Jackpot chances
- 0
- Jackpots
- 0
- Came back
- —
- Every bet brings back
- 90.00%
Everything is worked out exactly, as fractions. The run is a Markov chain over the five discs: each pocket of a disc is as likely as any other, and each either ends the run with what it pays or drops the ball to the disc below. What a ball is worth on a disc is each pocket’s pay (a "?" pocket’s lamps on average), or what it is worth on the disc below for an UP, over the disc’s pockets.
Every pocket pays a multiple of the bet, so no bet is better than another: each brings back exactly the same, and the floor is told that.
How it works
- A ball takes 1, 2, 3, 5, 10 medals, the bet you pick. Every pocket pays its multiple of the bet.
- Five discs, each with its pockets round its rim, all of a disc’s pockets as wide: the ball is as likely to settle in any one of them.
- UP (CHANCE on the third and fourth discs) drops the ball through to the disc below. OUT ends the run with nothing. Every other pocket ends it, and pays.
- A "?" pocket lights the disc’s lamp roulette: each lamp is as likely, and the multiple on the lamp it stops on is paid. JP, on the jackpot disc, pays ×300.
- Where the ball settles on each disc, and the lamp each roulette stops on, are drawn the moment START is pressed: ten numbers, two a disc. Nothing is drawn as the ball comes down.
- Skip only fast-forwards: once the ball is at the top of the tower, it takes it straight to its pocket.
- While the Odds tab is open the machine waits: the ball and the discs stop, and go on from the same point when you come back.
- Leaving the page (or reloading it) in the middle of a run finishes it at once, as it was drawn, and pays it.
Every bet
| Bet | Return | Jackpot |
|---|---|---|
| 1 medal | 90.00% | 300 |
| 2 medals | 90.00% | 600 |
| 3 medals | 90.00% | 900 |
| 5 medals | 90.00% | 1,500 |
| 10 medals | 90.00% | 3,000 |
Each disc’s pockets
Out of the disc’s pockets: how many of each kind, the chance of each once the ball is on the disc, and what it does.
| Pockets | Chance | |
|---|---|---|
| UP: down to the next disc | 6/18 | 33.33% |
| OUT | 12/18 | 66.67% |
| Pockets | Chance | |
|---|---|---|
| UP: down to the next disc | 3/15 | 20.00% |
| ?: a multiple the lamps pick | 3/15 | 20.00% |
| ×1 | 1/15 | 6.67% |
| ×2 | 2/15 | 13.33% |
| ×3 | 1/15 | 6.67% |
| OUT | 5/15 | 33.33% |
| Pockets | Chance | |
|---|---|---|
| CHANCE: on to the jackpot chance | 1/6 | 16.67% |
| ?: a multiple the lamps pick | 1/6 | 16.67% |
| ×3 | 2/6 | 33.33% |
| ×6 | 2/6 | 33.33% |
| Pockets | Chance | |
|---|---|---|
| CHANCE: on to the jackpot chance | 1/6 | 16.67% |
| ?: a multiple the lamps pick | 1/6 | 16.67% |
| ×6 | 2/6 | 33.33% |
| ×12 | 2/6 | 33.33% |
| Pockets | Chance | |
|---|---|---|
| JP: the jackpot, ×300 | 1/6 | 16.67% |
| ?: a multiple the lamps pick | 1/6 | 16.67% |
| ×15 | 2/6 | 33.33% |
| ×30 | 2/6 | 33.33% |
The lamp roulettes
A ball in a "?" pocket lights its disc’s roulette: each lamp is as likely, and its multiple is paid.
| Multiple | Lamps | Chance |
|---|---|---|
| ×1 | 3/10 | 30.00% |
| ×2 | 2/10 | 20.00% |
| ×3 | 2/10 | 20.00% |
| ×5 | 2/10 | 20.00% |
| ×10 | 1/10 | 10.00% |
| Multiple | Lamps | Chance |
|---|---|---|
| ×3 | 2/10 | 20.00% |
| ×5 | 3/10 | 30.00% |
| ×6 | 1/10 | 10.00% |
| ×8 | 1/10 | 10.00% |
| ×10 | 1/10 | 10.00% |
| ×12 | 1/10 | 10.00% |
| ×15 | 1/10 | 10.00% |
| Multiple | Lamps | Chance |
|---|---|---|
| ×6 | 2/8 | 25.00% |
| ×8 | 1/8 | 12.50% |
| ×10 | 1/8 | 12.50% |
| ×12 | 1/8 | 12.50% |
| ×20 | 2/8 | 25.00% |
| ×30 | 1/8 | 12.50% |
| Multiple | Lamps | Chance |
|---|---|---|
| ×15 | 1/8 | 12.50% |
| ×20 | 2/8 | 25.00% |
| ×25 | 1/8 | 12.50% |
| ×30 | 2/8 | 25.00% |
| ×50 | 2/8 | 25.00% |
What a ball pays
| Pays | Chance |
|---|---|
| Nothing (OUT) | 77.78% |
| ×1 | 4.22% |
| ×2 | 5.78% |
| ×3 | 6.00% |
| ×5 | 1.67% |
| ×6 | 2.75% |
| ×8 | 0.134% |
| ×10 | 0.801% |
| ×12 | 0.505% |
| ×15 | 0.177% |
| ×20 | 0.0540% |
| ×25 | 0.0039% |
| ×30 | 0.0926% |
| ×50 | 0.0077% |
| ×300 (JP) | 0.0309% |
A check by play
200,000 balls, drawn at random as the machine draws them, beside the exact figures.
| What | Exact | Played |
|---|---|---|
| Return | 90.00% | — |
| Reached disc 2 | 33.33% | — |
| Reached disc 3 | 6.67% | — |
| Reached the chance disc | 1.11% | — |
| Reached the jackpot disc | 0.185% | — |
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, Firework Ball Tower.