Neptunia

Lore

100

What is the name of all four nations?

Planeptune, Lastation, Leanbox, and Lowee.

200

What does ASIC stand for?

Arfoire Syndicate of International Crime.

Games

100

How many mainline games are there?

Four.

Spin-offs

200

Excluding mobile games, how many spin-offs are there?

14.
Cyberdimension, Dimension Tripper, Hyperdevotion, Action Unleashed, Producing Perfection, Megatagmension, Game Maker, Riders, Shooter, Virtual Stars, Ninja Wars, SVS, RPG, Superdimension.
15, if you count the now defunct NepNep☆Connect: Chaos Chanpuru.

Trivia

100

Are there more mainlines or spin-off titles?

Spin-offs.

200

What year did the first game come out in?

2010 (JP)
2011 (NA)

Etymology

100

What does Neptune's etymology?

The unreleased Sega Neptune.