
As of
30-day average
315 players25 of 30 days observed
| Data | Collected | Observed since | Last success |
|---|---|---|---|
| News and patch notes | Every 12 hours (warm tier) | 21 Oct 2026 | |
| Player counts | Every 4 hours (warm tier) | 21 Oct 2026 | |
| Store details | Every 3 hours, and when Steam reports a change (warm tier) | 19 Oct 2026 |
Busier games are polled more often. Source: Steam Web API. Not affiliated with Valve.
Forge and combine magical gems, build deadly defenses, and survive relentless waves in the Flash-era tower defense classics GemCraft, Chapter Zero, and Labyrinth. Now with up to 9x speed, new hotkeys, easier gem combining, and smoother performance.

Price now
$8.49Usual price
Lowest we've seen
$8.4921 Oct 2026
Sales we've seen
None yetNone since 21 Oct 2026
US Steam store prices, saved each time our store check sees a change. Our records start on 21 Oct 2026, so earlier sales are not listed. A sale is dated from the first check that saw it (usually within an hour of Steam changing the price) to the end date Steam gave. How we count
| Poll | Players |
|---|---|
| 05:54 UTC | 159 |
| 01:54 UTC | 209 |
| 13 Nov, 21:52 UTC | 267 |
| 13 Nov, 17:52 UTC | 245 |
| 13 Nov, 13:50 UTC | 168 |
| 13 Nov, 09:49 UTC | 153 |
| 13 Nov, 05:48 UTC | 156 |
| 13 Nov, 01:47 UTC | 185 |
| 12 Nov, 21:47 UTC | 286 |
| 12 Nov, 17:45 UTC | 257 |
| 12 Nov, 13:44 UTC | 195 |
| 12 Nov, 09:41 UTC | 127 |