
Spiral Stacks
A bookcase swings aside to reveal a spiral staircase winding up through the library. It is unlocked for everybody on this very page, and its bonus grows richer at each landing of the climb.
Glass doors swing open and butterflies drift from their gilded frames. Each paying line flutters off the reels, new pieces fall into place, and every step of the chain is worth more.
The exhibits are free and will remain so. Membership preserves your 100,000 coins, favourites, level and daily missions between visits — and allows the hall to confirm you are 19 or over before play.
Virtual coins alone. No real-money gambling, no prizes of real-world value, no in-app purchases. Adults 19+.
Wingcase Cabinet is the boldest and least predictable room in the hall. Paying symbols lift off the grid, everything above drops into the space and fresh curios fall in, so one spin can keep unfolding while the multiplier climbs to five times. Much of the value rests on the Bell Jar and the Swallowtail, which means quiet spells between the brightest moments. Turn three Curio Keys anywhere and ten free spins follow, each payout doubled before the chain adds its own boost; four keys make fifteen spins, five keys make twenty-five.
Flutter Chain. Paying symbols take wing, curios higher up sink into the gaps and new pieces drop in from above; the first result counts x1, the next x2, the third x3 and every later one x5. Scatters stay put.
All play in this wing uses free virtual coins. There is no real-money gambling, winnings have no real-world value, and in-app purchases are absent. Outcomes are set by a random number generator, and no spin affects the one that follows.
Measured by running this page's own engine for 5,000,000 spins: coin RTP 95.6%, hit frequency 33.4%, free spins about once in 135 spins, a win of 10x your stake or more about once in 76 spins. Coin figures only — no money is staked or returned.
Sign in, walk along the gallery to the open cabinet and choose your stake.
Spin. Paying lines flutter away, curios above settle downward and new pieces drop in; the spin itself pays x1, the first flutter x2, the second x3 and each flutter after that x5.
Unlock the free round with three Curio Keys for ten spins, every win doubled ahead of the chain boost; a quartet of keys grants fifteen, all five grant twenty-five.
Collectors with patience, happy to wait through quiet shelves for the rare chain that flutters across the whole cabinet.
The widest swings in the hall. Most of the worth lies with the Bell Jar and the Swallowtail, so bright results gather in flurries instead of arriving evenly.
| Exhibit symbol | Five in line on the reels | Expressed as a share of the stake |
|---|---|---|
| 5,000× line bet | 250× your stake | |
| 2,600× line bet | 130× your stake | |
| 1,400× line bet | 70× your stake | |
| 800× line bet | 40× your stake | |
| 440× line bet | 22× your stake | |
| 260× line bet | 13× your stake |
The five card ranks (10 to A) pay the least. Three Curio Keys anywhere open the free round. Full values for three and four of a kind are in the paytable.
No. Scatters stay exactly where they landed while winning line symbols lift off around them.
Free-round wins are worth double, then the flutter multiplier is laid over that as each chain lengthens.
By design. The cabinet keeps more of its worth in its rarest curios, and nothing is ever saved up or withheld.
Missions are renewed daily and apply in every wing. Taking part is entirely optional.

A bookcase swings aside to reveal a spiral staircase winding up through the library. It is unlocked for everybody on this very page, and its bonus grows richer at each landing of the climb.

Under the open dome a brass telescope points at the stars while a clockwork owl keeps watch. A calm machine that gives a quiet spin a second chance by holding its wilds in place.
Play for enjoyment, and stop once the enjoyment ends. Decide on a time limit beforehand and pause from time to time. If gambling of any sort is causing you difficulty, ConnexOntario offers free, confidential help on 1-866-531-2600 at all hours; the Responsible Gambling Council and CCSA may also be consulted. The hall’s responsible play policy sets out more.
Admission is restricted to adults of 19 years or older. All play uses virtual coins of no monetary value; they are not for sale, cannot be sold on, and can be neither withdrawn nor exchanged. The hall has no coin counter and no payment page, it awards no prizes of real-world value, and success in its galleries does not imply future success at real-money gambling.
Confidential gambling support, free of charge: ConnexOntario 1-866-531-2600, open at all hours · CCSA · Responsible Gambling Council · The hall’s house rules on play
All three wings draw on a single purse. Free membership unlocks each of them and preserves your coins, favourites, level and daily missions from one visit to the next.
Not ready? Spin the open world, Spiral Stacks — no email needed.