Click the gem to mine, spend your gems on builders that mine for you, and buy upgrades to grow faster. Rebirth for stars that boost everything, and come back later to collect what your builders mined while you were away.
Last updated:
0gems0 per second
Each click: 1 gems
⭐ Stars: 0 (+0% gems)
Rebirth to turn your progress into stars. Each star permanently adds 5% to everything you earn.
Buy
No upgrades available yet. Buy more builders to unlock them.
Owned upgrades
Achievements
Save
The game saves automatically in this browser every few seconds. Copy the save code to move your game to another browser.
Welcome back!
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How to use the Clicker Game
Click or tap the gem to mine gems. You can also focus it and press Enter.
Buy builders in the Builders tab. Each one mines gems every second, even when you are not clicking.
Open the Upgrades tab when the badge shows a number. Upgrades double your click power or a builder's output.
Catch the lucky star when it appears for bonus gems or a temporary boost.
Rebirth once you can claim stars: you start over, but every star permanently adds 5% to all gems you earn.
Builders at a glance
Base prices and output before upgrades, stars and achievements. Every builder you buy makes the next one of that kind 15% more expensive, and builder upgrades (at 1, 5, 25, 50, 100, 150 and 200 owned) each double that builder's output.
Builder
First costs
Gems / second
Seconds of its own output to pay back
⛏️ Pick Helper
15
0.1
150
👷 Miner
100
1
100
🔩 Drill
1,100
8
138
🛒 Mine Cart
12,000
47
255
🚜 Excavator
130,000
260
500
🌀 Tunnel Borer
1.4 million
1,400
1,000
🧪 Crystal Lab
20 million
7,800
2,564
🏭 Gem Factory
330 million
44,000
7,500
🌌 Gem Portal
5.1 billion
260,000
19,615
🌟 Star Forge
75 billion
1.6 million
46,875
Tips to grow faster
Compare cost per gem/second. Divide a builder's price by the gems per second it adds. The lowest number is usually the best buy, and the shop shows each builder's output so you can check quickly.
Grab the builder upgrades. An upgrade that doubles a builder you own 25 of is often worth far more than buying a few more of them.
Buy Golden Touch before you click a lot. Each Golden Touch adds 1% of your gems per second to every click, so clicking stays useful late in the game.
Save lucky stars for later? You can't, but a gem rush is worth most when your production is high, so buy builders first and click stars as they come.
When to rebirth: a common rule is to rebirth when you can at least double your current stars, because progress after a reset with twice the bonus catches up quickly.
Star requirements
Stars depend on all the gems you have ever earned: stars = ⌊√(all-time gems ÷ 1,000,000)⌋.
All-time gems
Total stars
Bonus
1 million
1
+5%
25 million
5
+25%
100 million
10
+50%
1 billion
31
+155%
100 billion
316
+1,580%
Frequently asked questions
What is a clicker game?
A clicker (or incremental) game is a game where you start by clicking to earn a resource and then spend it on things that earn more for you automatically. Numbers grow fast, so the fun is in choosing what to buy next to grow as quickly as possible.
Does the game keep running when I close the page?
Yes, in a way. Your game is saved in your browser, and when you come back the game works out how long you were gone and adds what your builders would have mined at your normal gems-per-second rate, for up to 12 hours.
How are builder prices calculated?
Each builder costs 15% more than the previous one of the same kind: price = base cost × 1.15^owned. Buying 10 at once costs the sum of the next 10 prices, which the shop shows before you buy.
How does rebirth work?
Your all-time gems decide how many stars you can have: stars = the square root of (all-time gems ÷ 1,000,000), rounded down. So 1 million gems earns your first star, 4 million the second, 100 million gives 10 stars. Rebirth resets gems, builders and upgrades, and each star adds 5% to everything you earn.
What do lucky stars do?
About every one to three minutes a star floats over the gem for 13 seconds. Clicking it gives one of three rewards: instant bonus gems (up to 15% of your bank or 15 minutes of production), a gem rush that multiplies production by 7 for 30 seconds, or a click storm that multiplies clicks by 10 for 15 seconds.
Will I lose my progress if I clear my browser data?
Yes. The save lives only in this browser's local storage. Use Copy save code in the Stats tab to keep a backup, and paste it into Load save code to restore it or move it to another device.
Is it OK to use an auto-clicker?
It's a single-player game, so it's up to you, but builders and upgrades quickly earn far more than clicking does. Holding down Enter does not repeat clicks; each press counts once.
Are all the tools on FreeToolCabin tested for quality and accuracy?
Yes! Every tool on our site undergoes automated Q/A testing in real browser environments to ensure high precision, correct output, and zero errors. If you happen to spot a bug or have a suggestion, please contact us at [email protected] and our team will review it right away.