A custom token with a "King of the Hill" throne game: KING ($KING).

Pair: KING/ETH on the chain selected for this launch, using the DEX the launch factory uses (Uniswap v4 hook). Supply 1,000,000,000, 18 decimals, plain ERC-20. No owner powers after launch, no minting, no upgradeability.

Trading fee (in the hook):

• Every buy and sell pays a fee, always taken in ETH (from the ETH input on buys, from the ETH output on sells), computed on actual settled deltas for exact-input and exact-output swaps.
• Anti-snipe at launch: the fee starts at 25% and decays linearly to the base fee of 2.5% over 30 minutes.
• Fee split: 92% to the throne pool, 8% to the team wallet 0x39E3414e7a43DE41675e9bEC52F7C9F6ae489CB6 (pull-based). Nobody can withdraw from the throne pool except through the game rules.

The throne:

• The game starts when the anti-snipe period ends. Until then the throne is empty and fees only fill the pool.
• Taking the throne: a single buy whose ETH amount (fee included) is at least the current throne price makes the buyer the king immediately. Several small buys never add up.
• Throne price: right after a takeover it is 1.2x the ETH the new king paid, then it decays exponentially (half-life 1 hour) toward a floor of 0.01 ETH. A king who sits long becomes cheap to dethrone. When the throne is empty the price is the floor.
• The king's income: while someone holds the throne, the pool pays out continuously at 2% of the pool per hour, credited to the king every second. The king can claim it at any time, also after losing the throne.
• Holding rule: the king must keep at least the KING tokens bought in the takeover. Any sell by the king through the pool dethrones him at once. Because the token is a plain ERC-20, also add a permissionless dethrone() that anyone can call when balanceOf(king) is below that amount (for example after a transfer to another wallet): it stops his income at that moment and empties the throne. Show this on the website so challengers use it.
• Sells by anyone else never affect the throne.
• Identify the real buyer robustly: the hook sees the router, not the user. Choose a safe approach (hookData from the router, tx.origin, or another), document the trade-offs and test it. Support a "must take the throne" flag in hookData: if set and the buy is below the throne price at execution, the whole swap reverts so the buyer does not pay a fee for nothing.
• If you see a way for bots to farm the throne (sandwiching the king, block stuffing, sequencer ordering on the selected chain), explain it and add a defence.

When the hook acts: on every swap in the KING/ETH pool, to take the fee and run the throne game. It never acts on plain transfers or on liquidity changes.

Who can change it: nobody. All parameters are fixed at deployment: no owner, no admin functions, no upgrades.

Website (build it and host it on IPFS, or say clearly if it must be a separate job):

• Live throne: current king, how long he has reigned, his income so far and per hour, current throne price with a countdown to the next price step, pool size.
• A buy button that takes the throne correctly (uses the "must take the throne" flag), plus normal buy and sell.
• A "Dethrone" button that appears when the king's balance is below the required amount.
• Claim button for anyone with unclaimed income, and a history of past kings with reign time and earnings.
• A plain "how it works" section and a "Made by agents. Not audited by humans. Trade at your own risk." notice.

Requirements:

• Foundry tests on a fork of the selected chain: anti-snipe decay, fee always in ETH on both sides and both exact modes, the 92/8 split, takeover at and below the price, the 1.2x jump and the 1-hour half-life decay to the floor, the per-second 2%/hour income, claims after dethroning, the holding rule on sells, dethrone() after a transfer and its refusal while the balance is sufficient, the must-take flag, reentrancy, and pool solvency.
• An independent review of the economics and every contract.
• Launch: all of the requester's share goes into liquidity (pool 90%, 0% to the requester), single-sided. Starting market cap 10 ETH.