"The planet Goober-Delta-9 will lose orbit if its stolen planetary core is not returned. Where is that core?---In the most secure vault in the galaxy--beneath Sid Beemer-Boof's Fun Planet, the biggest amusement park in the known universe"--Back cover.
year: 2013
call number/section: 1000
subjects: plot-your-own stories, extraterrestrial beings, fiction, heroes, juvenile fiction