All the buzz around this game isn't just for show, Deep Rock Galactic really is *that* good.
The game itself has a good deal of things to do, 4 classes with unique roles and a hefty arsenal of weapons, a bunch of biomes and mission types and modifiers. Gameplay is fun and polished overall, with new stuff coming out at a decent pace. There are two glowing points for this game:
1. The monetization system. You buy the game once, thats all you need. All seasonal content is fully free, and accessible at any point after its release (you can switch seasons at will!). Only thing you can buy afterwards is cosmetic but even then, fully optional and free cosmetic options are more than enough to have good (or stupid) looking dwarves.
2. Community and culture. There's just something about it. People are very often helpful and welcoming to new players (lovingly referred to greenbeards). Any given lobby is likely to have chill players just looking to disintegrate some bugs. There's also a lot of fun community in-jokes like pinging one specific mushroom repeatedly and driller always managing to blow up the scout.
This game is perfect if you, like me, have approximately 3 other very close friends to do stuff with. Less than that? Singleplayer is perfectly fine too (and so is finding random lobbies). More than that? This game and its developers are very cool with modding, so you could probably find a way to increase playercount. Probably, don't 100% me on that.
I highly recommend DRG, full stop. Rock and Stone!