Dimension Tripper Neptune: TOP NEP is a rail-shooter game coinciding with the OVA Hyperdimension Neptunia: Festival Full of Nep-Nep.
Guide Older Neptune as she takes to the skies with the help of her state-of-the-art Generator Unit! Combat through five unique stages and bosses based on the Gamindustri Nations. Blast through fast-moving obstacles and even fight some familiar Neptunia enemies and bosses! And if you gather enough coins on each stage, a friend will assist you on attacks. Challenge yourself and see what your highest score can be! Now, put on your gaming goggles, Maverick, and ready up for the wildest Neptunia ride of your life!
- The game's title is a reference to the film Top Gun.
- The game's description also mentions Maverick, a character from the film.