I bought it when it first came out.
Its mishmash of various 4x games.
The Campaign map plays like a XCOM, with pauseable realtime gameplay. When you go into a battle, it plays exactly like MoO2, in the same turn-based style of game. With shield arcs and missiles taking several turns to make it across the screen before hitting the targets.
There is a research tree akin to Civilization. you start off with Corvetters and destroyers, then eventually unlock battleships and dreadnaughts, which replace the former.
There is also a officer management system giving bonuses to attributes on ships.
Its a good game, but only has a single player campaign, with the same campaign map (Solar system).
I wouldn't call it a 4X game. I'd call it a XCOM game.