This month's Mighty Mini pays remembrance to the short-lived Mario Royale, which was later changed to DMCA Royale starring Infringio. Changing the names and assets apparently wasn't good enough for Nintendo, who sent the game's creator (Infernoplus) a cease & desist, thus shutting the entire project down.
Let this month's Mighty Mini serve as a reminder that Nintendo is a corporation and as such is out to maximize profits and protect their properties (sometimes to a ludicrous extent). They aren't your friends any more than the next company, and can be just as slimy as the others when the opportunity presents itself.
The Mighty Mini itself features Infringio leaping over a tombstone, symbolizing that his spirit (and that of indie developers) will live on. It is made using Perler mini beads.