AI-generated video game crossovers have recently captured the attention of players and developers alike, creating unexpected mashups of characters and worlds. Clips showing Steve from Minecraft floating above the dark fantasy world of Elden Ring, a soldier from Call of Duty performing a kickflip, or Mario battling a boss from FromSoftware have gone viral, accumulating tens of millions of views. These unusual combinations have raised questions about how such crossovers are created and who is behind them. The trend began on September 27, 2026, when a modder using the name chasm posted a clip of a soldier from Modern Warfare 2 riding a skateboard. The clip quickly gained over 7 million views and caught the attention of executives from major AI companies like Anthropic, OpenAI, and xAI. A few days later, Tobyn Jacobs, an artist from San Diego, claimed to have embedded the entire Minecraft game inside Elden Ring, including its 1,600 items and Creative mode. His video received over 22 million views, and he had to film himself playing the game to prove it wasn't just a montage. Another video featuring Mario battling a boss from Elden Ring surpassed 5 million views, though the creator did not reveal how it was made. The techniques used to merge these games often involve a "passthrough" method, where both games run at the same time on a single computer, with a small program acting as an interpreter. This method was previously used to integrate Minecraft into GTA V. However, some projects required more radical approaches, such as rewriting parts of the game from scratch. AI tools, including Claude Opus 5.5 from Anthropic, have been used in the development of some of these projects, although Jacobs has not shared any files or explained his specific method. The use of AI in reverse engineering has raised security concerns, as it can identify software vulnerabilities more efficiently than humans. In a recent report, Anthropic highlighted how an AI-driven group known as Sinophone found weaknesses in network equipment, while another AI system analyzed 1.8 million Android apps for access keys. Security updates can also become tools for attackers, as demonstrated by a study where Claude Mythos Preview created functional attacks on Firefox patches within hours of their release. The risks extend beyond software, with reports suggesting that attackers are using AI-generated programs to prepare offensives against critical infrastructure, such as water and energy systems. However, experts note that only a small percentage of identified vulnerabilities have been used for real attacks. Consumers are also at risk from fake mods and outdated devices, as seen in a misleading GitHub page offering a supposed official download of Minecraft in Elden Ring, which may be a scam. Delaying software updates can leave systems vulnerable, as patches can be reverse-engineered into attacks. Industrial robots, medical devices, and other connected objects that are difficult to update are especially at risk. As a result, replacing outdated devices is becoming an essential step to maintain security.