The episode constitutes an extensive game guide for the launch of the arcade-style beat 'em up, Marvel Cosmic Invasion, which features a massive roster of heroes fighting against Annihilus and his Annihilation Wave. The core gameplay revolves around assembling specialized duos to utilize the "Cosmic Swap" mechanic for complex tag-team synergies and combos across 16 stages. This guide provides an exhaustive look at the game's 15 playable Marvel heroes, listing their individual playstyles, strengths, and best partners for optimal team composition. The initial roster includes 11 heroes, while the remaining four—including Phoenix and Silver Surfer—are unlocked by defeating them as controlled bosses during the campaign’s critical path. Furthermore, the source explains the Cosmic Matrix progression system, where players utilize earned Cosmic Cubes to unlock alternate color palettes, music tracks, and game modifiers.