Thanks.
No, it's not related to my game, it is a combination of five different games.
Upper left corner: Samus spaceship from Metroid
Upper right corner: Olimars rocket and the Pikmins onions from Pikmin
Lower left corner: Mushroom kingdom with Peach's castle from Mario bros.
Lower right corner: hyrule castle and master sword in the forest from Zelda
Middle bottom: inkopolis from Splatoon