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About Superdimension Neptune VS Sega Hard Girls
Superdimension Neptune VS Sega Hard Girls is a collaborative action‑RPG that brings together characters from ASCII Media Works’ Dengeki Bunko and anthropomorphized Sega consoles. The game features familiar faces like Neptune and IF alongside Sega Hatsumi, Dreamcast, Saturn, Game Gear and Mega Drive, all rendered in 1080p graphics. Players can switch classes, use unique skills, navigate dungeons with varied movement options, and trigger Fever Time for temporary battle advantages.
01 / THE GUIDE
Collaboration Background
The title unites ASCII Media Works’ Dengeki Bunko universe with SEGA’s Hard Girls, a line of characters representing classic consoles. This partnership creates a narrative that celebrates SEGA’s history while integrating the existing Neptune cast.
Developed by IDEA FACTORY, COMPILE HEART and FELISTELLA, the game is released for Windows with full controller support and Steam‑related features such as achievements and cloud saves.
- Check the Steam store page for achievement lists before starting.
- Use a controller if you prefer analog movement for dungeon navigation.
02 / THE GUIDE
Playable Characters
Players can control a roster that includes Sega Hatsumi, Dreamcast, Sega Saturn, Game Gear, Mega Drive and returning characters Neptune, IF, Nepgear, Plutia and Uzume. Each appears with a 1080p graphical sheen.
All listed characters are selectable at the start of the adventure, providing a mix of personalities and visual designs.
- Experiment with different characters to see which visual style you prefer.
- Note that each character can change class, affecting stats.

03 / THE GUIDE
Class System
The game allows players to change classes, which alters statistics and unlocks special skills unique to each class. This system lets you customize your team’s performance for combat and exploration.
Specific classes grant exclusive abilities, encouraging strategic swaps before or during battles.
- Switch classes before a tough boss to access class‑specific skills.
- Track which class gives the highest stat boost for your preferred playstyle.
04 / THE GUIDE
Movement Mechanics
IF, described as her own stuntman, can perform actions such as jump, dash, climb and crawl to traverse treacherous dungeon terrain. These moves let you reach items, special rewards, or destroy obstacles.
The variety of actions adds a platforming element to the otherwise action‑RPG framework.
- Use dash to quickly evade enemy attacks in narrow corridors.
- Climb and crawl to access hidden areas that may contain loot.
05 / THE GUIDE
Fever Time
During combat, players can jump to obtain a rainbow gem that triggers Fever Time. This mode reduces enemy turns, enables an HDD form, and raises stats by 10%, offering a temporary combat edge.
Fever Time is activated by a specific in‑game action and lasts for a limited period.
- Activate Fever Time before a wave of enemies for maximum benefit.
- Combine Fever Time with high‑stat classes for stronger attacks.





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