Those of you who missed the original heyday of this app (the only reason for you to have missed it is that you were still busy drooling in your stroller), DSP sports gameplay similar to a tower defense game. Put up towers strategically in your location, armed with cannons, lasers, anti-air guns, the works, for you to protect yourself against an incoming attack. You'll earn some cash too by wiping out your enemies, which of course you can then use to upgrade your weapons.

For DSP v2, you'll have four maps with 50 waves each (unfortch, the Nile Map wouldn't fit on the PSP, so that's a no go for this version). There are also now 15 Unlockable Achievements, and quirkier sound effects.