The Vibe: A simple “first in line gets served first” rule for joining token launches, presales, or limited spots — whoever acts fastest wins.
The Details: In crypto launches (like Jupiter DTF, IDOs on Raydium, or some fair launches), FCFS means the allocation or whitelist spots are given to people who submit their transaction or connect wallet first — no lottery, no staking requirements, just pure speed. It’s often used with a cap (e.g., first 500 people get 100 tokens each) and anti-bot measures (rate limits, CAPTCHA, or wallet checks) to stop snipers. The downside: bots and fast clickers dominate unless protections are strong. In 2026, FCFS is popular in Solana DTFs and some L2 launches for its simplicity and transparency.
Pro Tip: If a launch is FCFS, prepare early: have wallet funded, gas ready, and use fast tools (Jito bundles on Solana, high gas on Ethereum). But beware — bots often win. Prefer launches with staking tiers or lotteries if you want fairer chances. Always DYOR the project and use a burner wallet.