Social media platforms have recently been filled with videos showing surprising combinations of video game worlds. These include Minecraft blocks appearing in the fictional city of Los Santos from Grand Theft Auto V, GTA 5 cars exploding with TNT, and Call of Duty: Black Ops weapons and zombies showing up in The Elder Scrolls V: Skyrim. These creative projects are made using artificial intelligence (AI) tools that are increasingly helping to write a large part of the code for PC game modifications, or "mods." While modders have long combined different game worlds, the process usually involves a lot of coding, testing, and time. However, recent examples suggest that these imaginative crossovers can now be created more easily. Rehan Sheikh, the creator of a mod that blends Minecraft and GTA 5, has developed a project called Universal Modder. This system gives AI tools instructions, tools, and documentation about existing games, allowing them to find and reuse solutions from previous projects. The mod runs both games at the same time on a single PC, using modifications in each to enable them to communicate. GTA 5 sends the player's position and camera view to Minecraft, and images from both games are combined to create the illusion of a single world. The program also considers the distance of objects, allowing elements from one game to interact with those from the other. For example, a streetlight from GTA can block part of a block house in Minecraft, which in turn can hide a car behind it. These constructions also become obstacles for vehicles. Additionally, actions in one game can trigger effects in the other, such as a TNT explosion in Minecraft causing an explosion in GTA, with nearby characters reacting as they would in the game. The use of AI has greatly reduced the time needed to create these crossovers. In the past, such projects would take much longer to develop. Now, modders can describe what they want to achieve, and AI tools can handle part of the technical work. The trend began with a mod that combined Minecraft and Elden Ring, created by Tobyn Jacobs, which is mentioned in the Universal Modder documentation. Since then, other modders have joined in, such as YouTuber Chasm, who created SkyCraft, a mix of Minecraft and Skyrim. His videos highlight the excitement around this new era of modding, with titles such as "The new generation of modding" and "Is this the future of video games?" Chasm also invites viewers to join his Discord server to explore other unusual combinations. These mods allow players to take control of their gaming experiences without waiting for game publishers to offer such crossovers. However, they also raise copyright concerns, as owning a game does not give permission to redistribute its content, even for free. Using files already installed on a player's computer avoids sharing them, but does not guarantee the legality of the mod. AI tools open up new possibilities but do not provide extra rights over the games they allow to be modified. These mods still require time and human oversight, as noted by Rehan Sheikh, who spent about two days working with an AI tool called Claude Code on the Minecraft × GTA mod. A human was directing the work and responsible for the project's key decisions.