First of all, I wasn't too excited about "Kongai," but it actually surprised me how good it was. Pretty much, you choose your cards, which have a variety of attacks, and use them in a battle against your opponent. It's an old concept, but still fun. It's fun to get cards from beating challenges at Kongregate and your opponents. However, the battle can be kind of boring. Over all, it's a pretty good game.
Meh.
This game definitely isn't the best game ever made, but it's good. The lack of knowledge of what you're doing at the beginning of the game kind of sucks, and the powerups are a little disappointing. It's pretty much just a top-down space shooter that plays a little bit like Asteroids. Also, the motherships are disappointingly easy; just fly in circles around them and keep shooting. All-in-all, the game was kind of boring in terms of game progression, but it's at least worth a spin if you're bored.