Your base periodically spits out clusters of pixels, which you can then use to deliver what the French call a smack down upon your opponent. Simply click on a group of pixels to select them, then click where you want them to go. Or, click and hold on a group and drag the mouse to draw a path for them to follow. (You can also move your base like this, though it moves much slower.) When two clusters of allied pixels come together, they automatically combine. The last base standing is the winner, and as you progress you'll find your enemies growing in number. I hope you're feeling quick. Rule One: CARDIO.
"So," you say, "how strategic is this game?" "Mmmmnnnyeeeeeaaaah." says I, waggling my hand in a weak sort of way. Actually, it largely depends on how cool a head you keep under pressure, particularly when facing multiple enemies, but rapidly flinging your troops into enormous swatches on the screen will still get you pretty far. Later levels start to incorporate obstacles in the terrain to contend with, and the difficulty ramps up considerably. There's no story to be had, so how much enjoyment you get out of the game largely depends on how much you like the flashy visuals and pick-up-and-go gameplay. It's great if you're looking for something fun and fast-paced to fill an hour or so, not so much if you're looking for a sweeping epic. For frantic fun, Pixel Legions is a twitchy click-fest that proves one thing; pixels are dangerous and must be stopped! No more computers; it's back to stone tablets for me.