The Algerians have a good generation of footballers that on paper should be able to play good football. In terms of individuals, they have a bunch of really talented players.
The only problem is, their coach Rabih Saadane. Now i'm not saying he's not a good coach, actually he is probably one of the best coaches in North Africa, he even got Algeria to the 86 WC back when he was a young coach. The only problem is, he is extremely negative in his approach. 90 % of the time he comes to a match not to concede and trys to win it by set pieces or individual brilliance by one of his players. Now i think that would be a good strategy when they face England, but it wouldn't do him too well against the US or Slovenia imo.
Also, its a misconception that Algeria is normally a negative team, on the contrary they are normally a joy to watch, but like i said, their coach is really negative.
About the players, their best players are.
Ziani, he is their star, their playmaker and one of the main reasons Algeria have qualified. Energetic player that is also a very good dribbler, and he's got an eye for the killer pass.
Belhadj, quality fullback. His forward runs, dribbling and crossing are all very good. Offensively he is an absolute beast, but he can be really suspect defensively.
Meghni, you probably know him well as he's been in the Calcio for a long time.
Algeria always plays a 3 man backline, which consists of Halliche, Bougherra and Antar Yahia. I think their defense is rather strong. One of the strongest in Africa actually. Their problems lie in the center of the field though, they have no real quality ball winner in midfield.
Thats so not true. One of their main strenghts is their defense. Really tight and physically imposing. Definitely one of the strongest in Africa if you ask me.