This is probably the first Gundam game I'd recommend just as a video game and not as a Gundam game. I think games like Super Robot Wars, the Gundam Versus series, and the G Generation games are good, but they definitely rely on a certain level of familiarity with the series to get the most out of them (yeah that's a bit less of the case with Versus since it's actually a pretty deep arena fighting series, but from the outside it just looks like another arena anime fighter.) Gundam Breaker 3 is different. Even if you nothing about the series, you can probably still have a great time tweaking your own mobile suit to fit your exact playstyle thanks to the absurd level of customization on display. There are multiple melee and ranged weapon types, head, body, arm, leg, and backpack parts for a metric fucton of suits ranging from the original 1979 series up through a handful of Iron-Blooded Orphans ones for the player to mess around with and recolor, which already brings a lot to the table. However, things like merging parts together to transfer skills or create new parts entitely and maxing out weapon abilities to use with any weapon type (like using a lance skill with a beam saber or a machine gun skill with a bazooka), builder parts that let you slap things like extra cannons and missile launchers onto your mobile suit, or even parts that come with unique attacks or extra weapons built in (beam sabers stored in a backpack, chest cannons, deployable funnels, etc.) add an extra layer that really lets you customize your playstyle to an insane degree. You can play a melee focused MS that mainly fights with its fists but also has dual beam sabers to mix into combos, effectively giving you a third type of melee attack on top of the basic light and heavy attacks that main melee weapons come with. You can make your mobile suit a walking weapons platform and load it down with as many cannons and missile launchers as possible. You can build your suit around speed and carry a bunch of funnels so you just let your autonomous drones whittle down enemies while you weave through the battlefield. I really cannot overstate how customizable your mobile suit is in this game, especially considering how two of the same part like two Gouf heads can have different levels, rarities, and passive skills attached to them. The system lets you just make something that looks cool, but you can spend hours tweaking each individual part to make the most powerful mobile suit possible if you want.

Or you could just play as a Ball with arms and legs.

This game is fantastic.

The story is nothing to write home about, but that's not why you're here. The sheer amount of Gunpla customization available to you in terms of parts and skills is simply unmatched. Throw in gameplay that's somewhere halfway between a musou and a character action game and you have a game that feels incredibly good to play AND lets you tickle that part of your brain that likes it when the number goes up.

Wasn't released in the US but you can order the version online that has English subs and it works on US PS4s.