Simplify the following text for a Grade 4 native English-speaking person.
Original: Me & My Katamari is a video game on the PSP platform . It is the third game in the Katamari Damacy series , the first game on a portable system and the first game produced without the involvement of series creator Keita Takahashi .
Simplified: It is the first and only handheld Katamari game .