How a round works

The board

The board has 25 slots. Slots 1 to 24 are the largest graduated pump.fun coins by market cap, one per ticker, each at least 24 hours old. The list refreshes every 10 minutes and a new round always uses the latest list. Slot 25 is always $PLINK.

A round

A round is open for 60 seconds. You can stack SOL on any slots during that time. When the gate closes, the nugget drops onto one slot, the round settles, and the next round opens after 12 seconds.

Every slot has the same 1 in 25 chance of being hit. How much SOL sits on a slot does not change its odds, only how the win is shared.

Split and solo slots

Each round, 10 slots are solo and the rest are split. Solo slots are marked, and you can see them before you stack.

• A split slot is hit: every miner on it shares the win, in proportion to the SOL each stacked there.
• A solo slot is hit: one miner on the slot takes the whole win. Your chance is your share of the SOL on that slot.

The cost of a round

After the drop every miner's SOL goes back to their balance. The slot that was hit keeps 98% of what was stacked on it, every other slot keeps 89%. See Fees for where the rest goes.