
A highly challenging game made for platformer enthusiasts.
Modeled estimate, not a reported figure. How we estimate →
Discounts
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Reviews, worldwide (the counter carries no country): 0/day in the week to Jul 30 → 0/day in the week after.
For scale, across Steam · Top Sellers · Brazil over the last 30 days: the 25 chart moves that followed a price cut of more than 20% went a median of 10 places towards #1, and the 2,413 moves with no price cut behind them went 2 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.
About
Challenge 99 is a precision platformer where your goal is to guide a nanoball through increasingly difficult levels in an attempt to escape a simulation. I made this game to test your perseverance and to push your ability to overcome seemingly impossible obstacles.
If you can make it to the end of the game, you can definitely call yourself a master platformer.
What the game offers:
99 unique and creative level designs.
8 different abilities to master.
A practice mode that will help you prepare for the upcoming obstacles.
A race mode where you earn ranks by beating fast time goals (with a ghost feature).
Tough to earn in-game achievements.
Hidden easter eggs and secret collectibles that invite some exploration.
Music Credits:
AudioCoffee
Cyberwave-Orchestra
Evgeny_Bardyuzha
mariokhol
PaulYudin
Genres
Add-ons
Each DLC is estimated with the same model as a game, then summed — a modeled figure, not reported DLC sales.
Reviews
Really fun marble/ball rolling game similar to games like Marble Blast Ultra. Very difficult but fun to play! I can recommend this for people who liked Marble It Up! or the Marble Blast games.
Media

Related
Related
Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English
Selling now
See how fast this game is selling right now — estimated copies and revenue per day from recent review growth.
Related
| Game | Estimated lifetime revenue | Reviews | Review score | Price |
|---|---|---|---|---|
| $149 | 4 | 75% | $1.99 | |
| $671.3K | 1.1K | 93% | $29.99 | |
| $11K | 44 | 91% | $9.99 | |
| $8.4K | 22 | 95% | $11.99 | |
| $583 | 5 | 100% | $4.99 | |
| $0 | 19 | 74% | Free |
Related
| Game | Estimated lifetime revenue | Reviews | Review score | Price |
|---|---|---|---|---|
| $325 | 50 | 68% | $0.49 | |
| $348 | 54 | 85% | $0.49 | |
| $368 | 57 | 88% | $0.49 | |
| $384 | 66 | 89% | $0.49 | |
| $387 | 61 | 87% | $0.99 | |
| $393 | 51 | 67% | $0.54 |