PARSEC47

A top-down shooter at frenetic speeds, distributed as freeware.

Destroy the incoming fighters (which come in different sizes and even include bosses every few rounds), while trying to gather the "energy cubes" for points as they're left behind by your dead enemies. The setting feels futuristic, but it's quite abstract, and one could assume it takes place in a sort of cybernetic world.

Each time you play the game randomizes the enemy's location and firing patterns, so it is impossible to memorize positions, while providing quite a bit of replay value.

The graphics are pseudo-3D, with a minimalistic wire-frame look for the background and ships, though the colors and effects are quite impressive and have a very peculiar style.

It features four difficulty modes, but even the first two modes are quite challenging and demand extreme reflexes and hand-eye coordination.