Another common mistake made by Gree! They ask you to write a review for Modern War, yet they take you to the Kingdom Age review page.
Ive been playing this game for 5yrs (yes Im hooked). The game is fun, but it has A LOT of issues. There are bugs in the game that have been happening for months and it appears Gree has no intention of fixing them. There are server issues that cause BAD lag and game crashes during team events. If you have a technical issue that requires involvement from Gree support, you should expect your issue to take at least 2 weeks to be resolved (my most recent issue took 4 weeks). Every single email response from Gree starts out with "Im sorry for the delay in responding, were receiving higher volume than normal..."
Besides all the issues with the game, it is fun. If you are competitive in nature, join a faction. The higher your faction rank, the better your stats will be. Of course buying gold will also help improve your stats if you use it the correct way (like buying boost buildings). But Ill warn you, once you start buying gold, it is hard to stop.
This game is a time based progression game. The more involved you are and the more time you spend playing the game, the better your stats will be. Once youve played for a while, its VERY hard to stop playing. Not only because you know that everyone else will pass you in stats, but you dont want to waste all that time and effort youve invested in the game.
For these reasons I recommend a different game.