Been playing this game for years, and taken several *long* breaks due to how things are implemented. I wouldn't recommend playing if you're not looking to waste everyday, all-day to gain progression that will inevitably be set back by boom rates on equips. This game punishes you for playing. (This applies to casual and hardcore players alike.)

The devs don't actually listen to the player base, there is little to no communication, and when there IS communication from the devs they just try and glaze over the issues without actually fixing them. If there is a bug that benefits players it will be fixed within hours, so you know they are watching, but if there are bugs that are detrimental to the players... be prepared for those bugs to be around for weeks/months before something **MIGHT** get done about it. But watch out, because if it has to do with their "dynamic RNG" rates, it will probably revert back to the bugged state with the next patch. They can't even be bothered to fix a text glitch that cropped up a while ago with accented characters, so they removed them instead. Only standard English characters on a global server, but good luck finding a name that isn't 16+ characters long because people hoard whatever names they can to sell for real currency. GMS can't even get the universal cash shop that most other servers have, so if you want any cosmetics or progression items, be prepared to spend $$$ to have them locked to one character.

"Best we can do is up the item transfer events from twice a year to four times, oh and here's a couple 30 min exp coupons and a handful of frags, but use them quick because they expire in a week."

Ridiculously greedy company with no regard for the player's time. If YOU value your time, don't play this game.

Nexon

Absolutely disgusting disregard for a player's time. No transparency for drop rates, any issues that benefit players are quickly hotfixed while ones that are detrimental remain unaddressed for days, weeks, if not months.
Just this recent Rock Spirit Event, if you weren't online in the first few hours, good luck completing it on time. You're expected to grind 50+ hours to finish the event in one month. A full time job is 160 hours a month.
Nexon expects you play their game nearly a third of your full time job for A SINGLE EVENT. Let that sink in. This company has abysmal communication with the community and time and again shows that they have a complete disregard and lack of respect for their players.