How a crater grows
Earth has 190 confirmed impact craters. Each one can have a single coin, launched on Stonks. After launch, every big buy is a meteor: it adds energy, the crater widens, and at fixed sizes a slice of the dev's bag burns.
A meteor lands
Any market buy of at least 0.1 % of supply, after block 0. Smaller buys are ignored. Block 0 (the creation and the dev buy) never counts, so nobody digs their own crater at launch. Sells do not refill a crater.
block 0 → ignored
Its energy is its size squared
Size is measured in % of supply. Squaring it makes one big buy worth far more than many small ones: ten buys of 0.1 % add 0.1 %², one buy of 1 % adds 1 %².
0.8 % → 0.64 %²
The diameter follows the cube root
Real impact craters scale with the cube root of energy. Impact uses the same law, calibrated so that 2,000 %² makes a 100 km crater. The crater is drawn on the map up to its real size; energy beyond that is still counted.
K = 100 / 2000^(1/3) ≈ 7.94
Burn classes
At 1, 10, 50 and 100 km a slice of the dev's pledged bag burns. Slices are weighted 1, 2, 3, 4. A crater only has the classes that fit its real size: Vredefort (160 km) has four, Kaali (0.11 km) has a single class at its own diameter.
weights 1 / 2 / 3 / 4
Try a meteor
How wide would a crater be after this many identical buys?
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The dev bag plan
Pledged at launch
The dev chooses a dev buy (0 to 25 % of supply) and the share of it the mechanism may burn (50 % by default). Both are public on the coin page.
Pre-signed burns
Each class is a burn transaction the dev signs at launch, on its own durable nonce, so it stays valid until used. Impact holds no tokens: it only submits that signed burn when the crater reaches the class.
ARMED, BURNED, CANCELLED
ARMED waits for the crater. BURNED landed on-chain. CANCELLED, in red, means the dev sold below that slice or used the nonce: the burn can no longer land, and everyone can see it.
What Impact cannot prevent
Wash trading
A wallet can buy and sell its own coin to make meteors. Squaring rewards size, not count, so splitting is useless, but one large buy-and-sell still digs. Every meteor is listed with its wallet; the "who dug most" list shows concentration.
A dev who sells
The dev keeps control of their wallet. Selling cancels the slices that no longer fit; it does not stop the sale. The red status is the only consequence, and it is public.
Price
A crater's size says how much big buying happened, nothing about what comes next. Nothing on this site is a promise about price.
Delays
Burns are submitted when the indexer sees the class reached. If the network is congested, a burn can land minutes later than the meteor.
Fees
| Impact, to launch | 0 % |
| Impact, per trade | 0 % |
| StonkFun platform, per trade | 1 % |
| Raydium LaunchLab, per trade | 0.25 % |
| Creator share | 0 % |
Impact has no wallet, no vault and no treasury. Your launch is one transaction signed by your own wallet; Solana network fees and account rent apply as on any launch.
Questions
Why only 190 coins?
The list is frozen: the 190 confirmed impact structures with published coordinates (Earth Impact Database, via Wikipedia's list). The studio refuses a crater that already has a coin.
Can I check the numbers myself?
Yes. The engine is one public file, /lib/engine.mjs, used by the server and by your browser. Same trades, same crater: the demo replay on each coin page checks it live.
Why launch here rather than straight on Stonks?
Same Stonks launch, plus a free full launch, a living crater on a world map, automatic public burns and a page where everything is declared.
Are the coins on the map real?
Coins marked DEMO are simulated so the site can be read before any launch. They are not tradable and nothing about them is on-chain.