More social wetworrk than social network, Frozen Synapse is a hardcore yet accessible strategy game designed to be played on your terms. Whether battling the AI or facing off against several opponents in asynchronous (read: play by mail) matches, it really is a special little game. Indeed, we gave it a perfect score.
You don't have to take our word for it, though, because Frozen Synapse is now free to download and play on Steam for the duration of the weekend! It's also got a discount down to £3.74, which will net you two copies - though you can undercut that via Greenman Gaming and their O3H7FE-D4NFO0-F0LIGK voucher code. It's unclear whether you'll get two copies, but I assume you will.