The story of Double Agent’s Mobile version is pretty similar to its console brethren; only it’s not all that detailed and fleshed out. And in case you’ve not played Double Agent at all, here’s a quick recap; Sam Fisher’s daughter has been killed in an accident and now as a man with nothing to live for, he undertakes the most dangerous mission of his life that sees him infiltrating the highly nefarious JBA (John Brown Army) army. Throughout the game you’ll have to perform missions for both the NSA as well as the JBA (hence the name Double Agent) with tons of moral choices cluttering your tedious journey (no one said being a Double Agent was easy).
The game starts off with Sam rescuing Jamie Brown from prison to gain access into the JBA after which you’ll embark on a plethora of diverse missions like disarming bombs, broadcasting transmissions for the terrorists, retrieving nuclear devices etc. Now even though Double Agent is an action platformer you can’t go around blindly killing everything that moves since that would get you killed pretty fast; stealth is still the name of the game here and you have to make sure you conceal yourself from the enemy at all times. If you are the sloppy variety and fail to do so you’ll trigger off an alarm due to which every enemy in the vicinity will get alerted of your presence and reduce you to Swiss cheese. To avoid this sort of an unfortunate incident all you have to do once spotted is lay low till the Alarm meter comes down to normal.
well in the previous splinter cell mobile game (chaos theory) you couldn't hang upside down and the only weapon you were able to use is your pistol so this one does have some new things compared to the last one 
