WeiBoard

WeiBoard is a 1000 × 1000 pixel wall on Ethereum where every plot is always for sale at the price its owner sets. It's the Million Dollar Homepage, except nothing is ever off the market.

You claim a plot of pixels for 0.001 ETH per block, put your image and link on it, and set your own price. Every month you pay 5% of that price to keep the plot. If you price it high, you're safe but it costs more to hold. If you price it low, it's cheap to hold but easy to buy out. When someone buys you out, you get the price back plus what's left of your deposit. If your deposit runs out, anyone can take the plot at the minimum price.

It's a real strategy game built on one rule, so the wall keeps changing hands. Everything runs on one immutable, verified contract with no admin control over plots or funds. There's no token and no NFT, just ETH. It's also cheap to start: about 0.001 ETH a block, and changing your content costs no gas.