Users can create topics by paying a fixed fee and writing an initial comment. Others can reply by replacing the existing comment, with the cost increasing for each replacement, creating a dynamic competition. Each topic can hold only one active comment at a time. Topics can be locked permanently after a set period, and the last commenter earns a larger share of the accumulated fees. When this happens, the topic creator receives a share of the accumulated fees, the last commenter earns a larger share along with a thematic NFT, and the topic (and the last comment) becomes a permanent part of the game history in the blockchain. While the topic has no comments, the topic creator can delete it and receive a full refund. Source code: https://github.com/nesquikm/tlwwbm The game: https://lastword.store There are two Medium articles about the project: https://medium.com/@drapolyuk/from-zero-to-game-full-stack-solana-development-simplified-9a6aa5239187 https://medium.com/@drapolyuk/from-zero-to-game-full-stack-solana-development-simplified-part-two-0d23a5aaf102