Stairpong by 155.io
A physical ping-pong-ball race down a bright studio staircase · Ping-pong ball staircase
Five colors of balls cascade down a long staircase, and whichever color reaches the bottom first takes the round. Rounds last about 25 seconds, ceiling is 100×.
The 60-second rundown
- 1106 balls, five colors, one staircase. Every round tips 106 color-coded ping-pong balls onto a bright staircase rig. They bounce from step to step, pile up, and spill toward the bottom — and the colors keep trading places the whole way down.
- 2A physical rig, not RNG. This is a real staircase built inside a 155.io studio and filmed live, not a math model. A camera watches the balls fall and an AI reads which color reaches the bottom first, so the result comes from actual bounces and collisions, not a seeded number.
- 3Two ways to bet. Back the single winning color, or forecast the order the colors finish in. Forecast is the harder call of the two.
- 4Fast rounds, a 100× ceiling. A round wraps in about 25 seconds — quicker than the CCTV counters — and the top payout tops out at 100×. It is one of the snappier titles in the 155.io catalog.
How it differs from the CCTV games
Rush Hour and Snow Run count things crossing a line. Stairpong asks which color hits the bottom first.
| Aspect | CCTV games (Rush Hour / Snow Run) | Stairpong |
|---|---|---|
| What you predict | How many objects cross a counting zone | Which color reaches the bottom first, and in what order |
| The feed | Traffic or ski-slope cameras | A fixed camera on a studio staircase rig |
| What moves | Cars, skiers, snowboarders | 106 ping-pong balls in five colors |
| Source of variance | Time of day, weather, footage | Step bounces, ball collisions, the drop |
| Bet structure | Over/Under, Range, Exact Count | Pick Winner, Forecast |
| Top payout | 18× | 100× |
| Round length | ~55s | ~25s |
| Where it runs | CCTV-style feeds on 155.io | A physics rig in the 155.io studio |
The two bets, and what they cost you
Same drop, two risk levels. The wider your claim, the longer the odds.
Pick Winner
Back one of the five colors to reach the bottom first. One color out of five, so it is the more forgiving of the two — and the shorter price. If you are new to the rig, this is where to start.
Forecast
Predict the order the colors finish in, not just the winner. More has to go your way than a straight winner pick, which is why the 100× ceiling sits on this bet — and why the variance runs higher.
Playing Stairpong
Stairpong is a physical rig, so there is no seed to reverse-engineer and no pattern in the bounces you can genuinely predict. Treat every round as independent — the color that won the last one has no memory of it. What you can control is which bet you take and how much variance you sign up for.
Match the bet to your bankroll. Pick Winner keeps you in more rounds for longer, which adds up fast when a round wraps every 25 seconds. Forecast is a rarer-hit, bigger-pay bet; size those stakes as entertainment, not as your main line.
The staircase is the story. Every step is a chance for the order to change. That is what makes a mid-fall lead unsafe and what stretches the payout on Forecast. If you enjoy the chaos, lean into Forecast; if you want the result to track the early leader more often, Pick Winner is the calmer read.
Read the RTP band, not a single number. The published return sits between 90.62% and 93.12%, and where a given round lands inside that band depends on the bet type and the operator. Like every game in this lineup, the house edge is real and the ceiling is a ceiling, not an expectation.
Set a stop before you start. A 25-second round makes it easy to keep clicking. Decide your session limit in advance and let the fast rhythm work for you, not against you.
Where to play Stairpong
Stairpong is a studio game from 155.io, and rolls out through the same operator network that carries Rush Hour and Snow Run. Since our verified casino list covers that network, the venues already running the CCTV games are where you will find this one too.