Casual and social
I absolutely love this game. It's casual, social, and not very demanding of your time, unless you want it to be. Story doesn't matter, but you don't miss it. Almost everyone is super helpful and the general vibe is highly positive. A bit of "carry culture" seeped in, but you can just avoid/ignore it. F2P friendly, for the most part, if you're willing to hoard resources for the important rewards, and wait for your strength to grow. Grab yourself a good crew, and/or Guild, and just enjoy.