Notch insisted that there was no drama between the two developers, however. "I'm a huge fan of clones," he said. "I think clones is how games evolve, I'm a huge proponent of patterns." At the same time, however, Notch says he's "been through hell and back" enough to know how trademarks work, and he's a fan of protecting those as well. "I think trademarks are great, because you can go this is our product, this is your product and it can all be seen by consumers."