The Vibe: The old-school way projects raised millions by selling new tokens directly to the public — like a crypto Kickstarter, but often very risky.
The Details: An ICO was when a project created a new token and sold it to early investors (usually for ETH or BTC) to fund development. Investors bought in, hoping the token would gain value after launch. The 2017–2018 ICO craze raised billions (Ethereum raised ~$18M in 2014), but many were scams — teams disappeared with funds (rug pulls), delivered nothing, or tokens crashed to zero. After massive losses, the SEC cracked down in 2017–2019, treating most ICOs as unregistered securities. Today, true ICOs are rare; modern equivalents are IDOs (on DEXs), fair launches, or VC rounds with better protections.
Pro Tip: Avoid anything calling itself an “ICO” in 2026 — it’s usually a red flag for scams. Stick to audited, transparent launches on trusted platforms (pump.fun, Jupiter DTF, etc.). Always DYOR: check team, code audits, locked liquidity, and on-chain activity before buying in.