Ratchet & Clank: Size Matters is a 2007 platform game developed by High Impact Games and published by Sony Computer Entertainment. A spin-off of the Ratchet & Clank series, it is its first title for the PlayStation Portable. Development company High Impact Games was spawned from the original Ratchet & Clank developer, Insomniac Games. The story follows Ratchet and Clank as they are interrupted from their vacation to search for a kidnapped girl and encounter a forgotten race known as the Technomites. Size Matters released for the PlayStation Portable in 2007 and for the PlayStation 2 in 2008. The PSP version received generally positive reviews from critics, while the PS2 version received mixed reviews. The game sold 4.4 million units. The PSP version was re-released on July 2024 for PlayStation 4 and 5.