All-In, Part 4! The final G.I. Joe: A Real American Hero story arc at IDW Publishing continues! Using a brand-new casino on Cobra Island as a front, Cobra has been busy resurrecting dangerous villains and heroes alike, all in the hope of creating the deadliest Cobra army ever! It’ll be up to the warriors of G.I. Joe to foil their archenemy’s evil machinations before it’s too late. The fight for the fate of the world is barreling to a calamitous conclusion, and it’s time for every single player to go…ALL-IN!New and classic heroes and villains will fill the pages (including some shocking appearances!) as the fan-favorite creative team of Living Legend Larry Hama and SL Gallant bring us the penultimate issue on the final treacherous march to issue #300!