| 8,086 | | Otherdeed NFT Mint | NFT | 2022-05-01 | Yuga Labs' Otherside metaverse mint burned $175M in ETH. Gas hit an all-time high of 8,086 Gwei — the most expensive hour in Ethereum history. |
| 1,500 | | May 2021 Crash | Market | 2021-05-19 | China's crypto ban + Elon's Bitcoin reversal triggered a 50% crash. Liquidation bots and panicking sellers created the worst gas war since Black Thursday. |
| 750 | | LUNA/UST Collapse | Market | 2022-05-12 | Terra's algorithmic stablecoin lost its peg. $40B evaporated in days. Panic selling, bridge withdrawals, and liquidations caused multi-day gas spikes. |
| 475 | | EIP-1559 Goes Live | Upgrade | 2021-08-05 | London hard fork activated EIP-1559. Ironically, the upgrade that aimed to make gas predictable caused a gas spike as users rushed to be in the first base-fee blocks. |
| 430 | | LooksRare Airdrop | Launch | 2022-01-12 | LooksRare's vampire attack on OpenSea airdropped LOOKS to OS traders. Claiming + staking created a two-day gas war peaking at 430 Gwei. |
| 380 | | ENS Airdrop | Launch | 2021-11-01 | Ethereum Name Service airdropped governance tokens to .eth holders. Millions of claims in the first hours created sustained 380 Gwei gas. |
| 350 | | Hashmasks Mint | NFT | 2021-02-03 | Hashmasks pioneered the 'mint rush' model. 16,384 NFTs sold out in days with gas wars reaching 350 Gwei as collectors competed for rare traits. |
| 310 | | Loot Project | NFT | 2021-09-01 | Dom Hofmann's Loot — randomized adventure gear stored on-chain. The 'bottom-up metaverse' concept sold out in hours with brutal gas wars. |
| 280 | | YFI Launch | Launch | 2020-07-26 | Yearn Finance's fair launch with zero pre-mine created a frenzy. YFI went from $0 to $30k as users competed to farm the token. |
| 250 | | SushiSwap Vampire Attack | DeFi | 2020-08-28 | SushiSwap's vampire migration from Uniswap moved $1.14B in liquidity. Gas spiked as LPs rushed to migrate and claim SUSHI rewards. |
| 250 | | 3AC / Celsius Contagion | Market | 2022-06-18 | Three Arrows Capital and Celsius insolvencies triggered DeFi bank runs. Users withdrew from lending protocols en masse, spiking gas. |
| 225 | | Beeple Christie's Sale | NFT | 2021-03-11 | Beeple's $69M Christie's auction made global news. The resulting NFT hype wave pushed on-chain activity and gas prices to new highs. |
| 200 | | Black Thursday | Market | 2020-03-12 | ETH dropped 43% in one day. Liquidation cascades on MakerDAO caused massive gas bidding wars as users rushed to save CDPs. |
| 180 | | Axie Infinity Peak | NFT | 2021-07-08 | Axie Infinity hit 1M daily active users. Ronin bridge deposits and SLP claims generated sustained high gas on Ethereum mainnet. |
| 175 | | UNI Airdrop | Launch | 2020-09-17 | Uniswap airdropped 400 UNI to every historical user. 250,000+ addresses claimed simultaneously, clogging the network for hours. |
| 150 | | PEPE Memecoin Frenzy | Meme | 2023-05-05 | PEPE token launched the 2023 memecoin season. Uniswap volume hit $2B in a week as degens aped in, pushing gas above 150 Gwei. |
| 120 | | The Merge | Upgrade | 2022-09-15 | Ethereum transitioned from Proof of Work to Proof of Stake. Gas spiked briefly as users and bots positioned around the historic block. |
| 115 | | Harvest Finance Hack | Hack | 2020-10-26 | A $34M flash loan attack on Harvest Finance caused panic withdrawals. Users competed to exit the protocol before more funds were drained. |
| 110 | | Compound COMP Launch | DeFi | 2020-06-15 | Compound's governance token launch kicked off DeFi Summer. Yield farmers flooded the network competing for the first COMP distributions. |
| 110 | | Dencun Upgrade | Upgrade | 2024-03-13 | EIP-4844 (Proto-Danksharding) went live, introducing blob transactions. Gas spiked briefly as L2s and users tested the new transaction type. |
| 90 | | Bitcoin Ordinals Spillover | NFT | 2023-11-09 | Bitcoin Ordinals hype spilled onto Ethereum as traders bridged BTC and minted BRC-20 inspired tokens. Moderate gas increase across chains. |
| 80 | | USDC Depeg Panic | Market | 2023-03-11 | Silicon Valley Bank's collapse briefly depegged USDC to $0.87. DEX swaps, bridge exits, and stablecoin rotations caused a moderate gas spike. |
| 65 | | Bitcoin ETF Approval | Market | 2024-01-11 | SEC approved 11 spot Bitcoin ETFs. The historic moment triggered a burst of on-chain activity as traders repositioned across DeFi protocols. |