Welcome to Billy Frontier, a cool, tongue-in-cheek western game developed and published by long-time Mac game developers .

Cowboys and... Aliens?: Pangea Software turns the classic western on its ear in Billy Frontier.Where the classic westerns left off, Billy Frontier picks up, with players donning their own tin star in order to drive the bad guys out of town. To complete the game, players must complete six levels featuring three events: two shootouts, two duels and two stampedes--each filled with alien baddies, ample gunfire and hopping kangaroo-bovine mutations known as "kanga-cows").

The graphics and sound make this game and Billy Frontier flexes its muscles with a 3-D engine that shows the player what the iPhone and iPod touch are truly capable of. Tap into one of the game's target practice levels, and the cavalcade of lovingly rendered kanga-cows, aliens, lizard men, ghosts, bottles, ammo boxes and power-ups that vault into the air as targets will amaze you.

This, combined with a fun, twangy, well-crafted soundtrack, creates a terrific game environment the player can enjoy for a few minutes at a time as well as during longer gaming sessions.

Unfortunately, gameplay within Billy Frontier fluctuates between extremely fun and downright frustrating depending on the situation. During shootout levels, the player taps the screen to indicate where they want to fire at aliens the ducking for cover (and occasionally taking potshots at you). As the gunfight continues, players can shoot barrels and crates to reveal extra ammo, health, and money which must shot again in order to be collected.