Atlantica Online centers around one fun game play aspect, marred by terrible corporate decisions. I cannot recommend it to anyone, especially if you have ever had problems with a gambling addiction.
The turn based formation combat is entertaining and rather unique. Where you place your mercs and which mercs you use and in what order makes for fun game play and interesting decisions.
The journal that collects battle info is very well done.
There are several different pvp and pve activities implemented, allowing you to use your mercs and strategies in different ways against different types of obstacles.
Your mileage may vary, but the people who I met who play this game seemed friendly. The ones who weren't AFK, that is.
Your mercs must level up from when you first get them, often placing them far behind your main character and the rest of your team of mercs. Keeping a large stable to switch out for different strategies is not practical for this reason and the cost in real money to buy licenses.
The artwork in Atlantica Online is dated. This one doesn't bother me that much, but I know people who are put off by such things.
The depiction of women is insulting; expect nearly any woman in this game to be very buxom, half naked, and usually underage. The depiction of men is also very shallow.
The experience required to level your character and your crafting skills drag each process out beyond reason, after a certain grace period. Many of the quests after a point become a grind by themselves, as well.
You can recieve free experience for sitting, and many people at high levels afk craft, which rewards alt tabbing the game for long periods of time, leading to a social atmosphere where many if not most of the people logged into the game aren't actually there.
The North American version of the game is approximately 10 updates behind the Korean version. I estimate that to be about 2 years, perhaps more. Expect whatever bugs they fixed long ago to still be around for you, and whatever features they are accustomed to to still be unavailable to you.
This game has the worst item store of any free to play game that I have ever seen. DO NOT PLAY THIS GAME IF YOU HAVE A GAMBLING ADDICTION. Two item types, available only through the store, have stats equivalent to the highest level gear or higher, and have no in game available alternatives, meaning that they will be needed to be competitive in pvp, especially at lower levels, and many strategies for fighting higher level, tougher dungeons, will be more difficult, if not impossible, without them. To attempt to buy one of these items you must pay 10 dollars US for a 'box' that might contain the item that you are after. The odds of containing your coveted item are not listed in the store, but the internet suggests 5% or less. The cost to buy the points needed is also not listed in the store, without first giving up your credit card information. I found it through internet searches. Finally, there are four powerful mercs available through the item store, which will also be difficult to progress in higher level content without, and needed to be competitive in pvp even at low levels. Each costs fifty dollars US plus twenty to thirty more for any skill up books, depending on if you bought a bundle or not. For comparison, a newly released major company video game typically costs 50 to 60 dollars, if it's 18 months to 2 years old it typically costs 30, and for something 5 years old or more, as many good turn based games are, 5 to 10 dollars.
Finally, customer service tickets take a ridiculously long time to be answered, if they are ever answered at all. There are people in the forums that have been waiting for six months on unanswered tickets about serious issues such as account or item theft.
My suggestion to anyone considering this game would be to spend less time and money than you would spend trying to succeed at this game buying several turn based games from steam and from gog. If you enjoy the few redeeming qualities enough to play it anyway, at least know what you're getting into.