Hardcore Gamer: Published by Compile Heart and developed by Tamsoft, Neptunia U is an action spin-off of the series.

Hyperdimension Neptunia U: Action Unleashed is the latest spin-off in the series developed by the Senran Kagura team at Tamsoft.

Hyperdimension Neptunia U: Action Unleashed! is another spinoff in the ever-growing Hyperdimenison Neptunia universe. This time around they decided to try something different, a beat ’em up. How well did the story and setting translate over to this new genre?
I just got Hyperdevotion Noire in the sale last week and it's really good. Made by Sting the same dudes that did Gungnir, Riviera and Yggdra Union on PSP/DS. This should be good too. The stories in these games always feel juvenile and lacking though. At least the gameplay is good.

Tamsoft,the developer of Hyperdimension Neptunia U: Action Unleashed,is in some ways the perfect match for Compile Heart's premier franchise.
Wow, I honestly assumed this was a Wii U game.
there's not much gameplay in the trailer