Green Ronin has created a license for its Mutants & Masterminds RPG, in addition to the Open Gaming License it was released under. This new license, called M&M Superlink, is for non-Green Ronin products that are compatible with Mutants & Masterminds. Any new creations will have to be checked by the GR folks at different stages to ensure that both the M&M Superlink and the Open Gaming License are being properly followed. However, this opens the door for new superhero materials to come flooding into the marketplace.

Green Ronin's M&M Superlink info: