POPGunner is a vertical shooter created by the developer of Thieving Racoon and Microland, featuring an infinite number of levels, configurable controls and a small screen area which wraps around on all four sides of the window.

Use the cursor keys to move, and hold the space key to launch your Polarity Orb forward. The orb also works as a protective shield when it is held by your ship. A green gauge at the bottom of the screen is knocked down by a small margin whenever an enemy ship gets past you, and the game ends immediately when this indicator hits zero. The F4 function key can be used to switch between full screen and windowed mode.

Nice as it is, there are a couple of setbacks to be found in this game. Your ship can never move diagonally, the high score table is an offline affair, and levels might be a bit too easy to hold the interest of most shmup veterans. (forum thread)

Name: POPGunner
Developer: Shoo
Category: Shooter
Type: Freeware
Size: 10MB