This mad Kickstarted RTS is one of the most outrageous, high-octane and ludicrous examples of the genre I've ever played, even in Early Access. Halfway between Total Annihilation and Supreme Commander -- because it's made by the same designers -- you'll wage total war with hundreds of units, orbital weaponry and smash planets into each other for the fun of it. The new Galactic War mode adds singleplayer shenanigans into the mix, letting you get the hang of its crazy gameplay before getting involved online.
Thanks to Steam's summer sale, you can save a cool £20 over the next 30 hours. Well worth a punt if you're curious, even in its beta state.