protocol after discovering a new form of Energon. This Ore-13 appears to be the same "Ultra-Energon" that Bludgeon used to revive Thunderwing, who had been dormant for millennia after the apocalypse. Starscream had already used it to fuel a failed attempt to usurp Megatron's leadership, as detailed in the Infiltration miniseries. In the Escalation miniseries, Megatron engages Prime and, boosted by Ore-13, overcomes him. Believing their leader dead, the rest of the Autobots attempt to buy the newly arrived Hot Rod the time to collect the clone. Prime, who had transferred his consciousness to a backup memory in his trailer command post, advised them to exploit Ore-13's weakness and assault Megatron all-out, catalyzing the Decepticon leader's Energon supply and crippling him. Bumblebee, Jazz, Optimus Prime, Prowl, and Ratchet appeared in a New Avengers/Transformers crossover by Marvel Comics and IDW Publishing in 2007. Optimus Prime leads Bumblebee, Drift, Kup, Prowl, Ratchet, and Wheeljack in Las Vegas when a Cybertronian ship crashes, containing Galvatron, Cyclonus, Scourge, and an infestation of zombies from another universe. Galvatron attempts to take command of the Autobots and, after fighting them, explains his mission to stop an undead infestation. Wheeljack sets up an energy shield around the city to keep the infestation contained, but it only last for 24 hours. Despite the containment effort, Kup realizes that Bayonet, a Decepticon in Galvatron's command, is not all she seems. She turns out to be the extradimensional vampire Britt. Video games Generation 1 Optimus Prime has appeared in numerous video games since the introduction of the Transformers series. He makes a cameo in the 1999 Beast Wars Transmetals video game for Nintendo 64, where he is killed by Megatron at the end of the campaign, showing what would have happened in the Beast Wars series with a Predacon victory. Prime is also one of the playable characters in the 2003 Japan-only Transformers game for the PlayStation 2 and the 2010 Transformers: War for Cybertron. Optimus Prime is also playable in the Hasbro Net Jet Transformers fighting game Transformers Battle Universe. Three versions of Optimus Prime are playable characters, including the first generation incarnation, his incarnations from the 2007 live-action film, and the incarnation from Transformers Animated. In this game, Optimus Primal is also a playable character. He is a regular character in the Nintendo GameCube and PlayStation 2 2003 fighting game DreamMix TV World Fighters. He appeared as a