Mr. Men and Pac-Man: Summer Spice is a crossover fanfiction special written by MarioFan65. The story is a crossover with Mr. Men and Pac-Man and the sequel to Mr. Men and Pac-Man: The Hunt for Easter Eggs, focusing on Mr. Happy and Pac-Man going on vacation around the world, joined by the Spice Girls as the ghosts seek for revenge on the Mr. Men world. It was released on June 1, 2020.
- Mr. Happy
- Little Miss Spice Girls
- Chapter 1: Wannabe
- Chapter 2: Say You'll Be There
- Chapter 3: 2 Become 1
- Chapter 4/Epilogue: Spice Up Your Life
- The story was made to accommodate Pac-Man's 40th Anniversary. The song "Join the Pac" by Ken Ishii is introduced in the story.
- The Spice Girls are Little Misses in the story and based on their books which were released on June 23, 2019.
- The chapter names are based on songs from The Spice Girls which based on the story.