This article examines the ten largest crypto airdrops in history, ranging from Uniswap to 1inch Network. It analyzes each project's airdrop rules, market response, and price performance. The article categorizes airdrops into four types: task-based, interaction-based, staking-based, and comprehensive. It also evaluates crucial success factors, including market conditions and sentiment, tokenomics, community development, and competition. Through these case studies, readers can better identify promising airdrop opportunities while understanding the importance of evaluating project fundamentals and taking a cautious approach to post-airdrop investments.