Be a Giant Transforming Battle Robot
Let your inner twelve-year old say "Cool!".
Gun Metal is a level-based third-person shooter in which you control a mech--a giant battle bot--that can also transform into a jet aircraft. In a series of levels, you battle enemy tanks, hovertanks, aircraft, artillery, and so on, generally with some ground support from friendly troops. Kind of mindless fun, and maybe not the most creative game ever published, but hey, at ten bucks, it's a pretty good deal.
I Long for Combat
...as one of the units in Starcraft says. If you long for combat, you'd be hard put to find a better game than Crimsonland, which is a pure, fast, intense third-person gorefest. Story? Pah! Who needs story when there are things to shoot, with a wide variety of high-powered weapons and 50 levels to conquer. Shoot, grab the powerups, retreat when necessary, and shoot some more.
That's Gibbage as in "gibs," from "giblets"--the body parts strewn across the screen in FPS games like Doom and Quake.
Gibbage is a truly odd and heart-warmingly gory game that combines the mechanics of retro platformers with the aesthetic of the modern first-person shooter. The graphics are cartoony, and would not look amiss on a NES or pre-CD-ROM PC; the gameplay is deathmatch shooting madness. Your avatar runs and leaps about, gathering powerups and dispatching your foe with massive firepower, a 3D game's gibs replaced with pixellated blood.