Splinter Cell double agent i believe is by far the best of the series. You are to infiltrate a terrorist orginization and take it down from within.Double agent is totally different then the others in the series,insted of having the same set of gadgets through the whole game you now can unlock them as you play through the missions.Like a mine you place on the wall that explodes,stuns,or flashes an enemy as they get close.Insted of being in just dark environments you are placed in a wide variety of atmospheres ranging from a large dark hotel that you must infiltrate from the outside to an urban battlefield with explosions and bullets whizzing by. Insted of having a set list of objectives you can choose whether or not to complete them as long as your trust bar is filled up. You have 2 trust bars that you must keep filled or its game over. The multplayer is a blast with 3 on 3 spies vs Mercs. Or if your alone you can assign the empty spots with bots. As a spy your main spy objective is to download a file without the mercs catching you.But in order to succeed you need teamwork like as a spy one of you distract the merc, one take out the lights and one of you hack the system. As a merc keep in contact with eachother and be ready to help the other one out when needed. Splinter Cell Double Agent is truly an ausome game which i recomend to anyone and everyone.