"I already finished this RPG a long time ago, but it's pointless, and I'm still leveling up."
This is a line from the ending theme song "Hanpan Tamashii" of the original Build Fighters, and that's exactly how I feel about Gundam Breaker 3. It's not even an online game, and I've played it for over 1000 hours.
NEW? It's so annoying to even think about it; it's a horrible piece of trash, one of the worst Gundam games in history.
4? It just includes more Gunpla, but the story and action are nowhere near as good as 3.
Gundam Breaker 3 is currently the best. If you're thinking about playing the series from now on,

A reproduction of the beloved Gundam from Gundam Breaker 3! | amtt526's Gunpla works