Nova 1492 Arms Revolution is one of the most addictive games i've ever played. It has amazing graphics if you a looking out for games with cool graphics. This is a strategy game. You have to earn money by accomplishing quests, then use it to buy parts for your robot which you are going to create. There are different types of quest, and each of them will reward you with different things when you finish it. For example, the "Defend Your Base for 5 Minutes" quest will give you a lot of money once you finish it compared to other quests. You can also gain Luck by playing the "Kill the Enemy Boss" quest and use the luck you have earned to buy parts. If you are lucky, you might get a "star item" which has bonus statistics. You can also challege other people. Anyway, if you are into 3D robot strategy games, you should definitely try this game.
I have played this game for quite sometime and I still have not got tired of this game. One problem is that, it's in Korean only, so you might have some trouble understanding the game.