If you're a dedicated shooter player, you know that the experience doesn't easily translate to mobile games. Glu's Frontline Commando gets around this by discarding free movement and switching to a completely cover-based system, smartly freeing up the limited controls for aiming and weapon management. The sequel just landed in the Play Store as a free download. Yes, this is a free game with in-app purchases - if that's a problem for you, you can stop reading right here and start drafting your snarky and dismissive comment now.
While those fellas are tapping away, you'll be happy to read that the technical presentation on Frontline Commando 2 is very impressive. You start off with limited weapons and gear, gradually upgrading your guns and accessories. There's a new team element in the sequel, allowing you to recruit squadmates like a bowling team with bullets and Kevlar. The limited movement from cover to cover won't please conventional shooter fans, but the tight focus makes for surprisingly deep tactics once you flesh out your squad and add a few grenades and gun types. The graphics and sound are pretty great as well, though the story doesn't get much deeper than "guys with guns shooting other guys with guns, for money."
Just like any proper Modern Warfare-inspired mobile game, FC2 includes both single player and online multiplayer modes. And just like any Glu game, the only real way to advance in either mode is via gratuitous grinding on the dual currency progression system or by dropping a few real dollars into IAP. In this particular title it seems that the PVP system might be irrevocably broken, since there's a huge disparity between the starter weapons and the crazy powerful, crazy expensive guns in the game shop. If that doesn't dissuade you, Frontline Commando 2 is a free download for Android 2.1 and up. You'll need some decent hardware to run the game smoothly.