https://www.pcgamer.com/twin-stick-shooter-helldivers-gets-free-weekend-and-major-difficulty-update/

Helldivers, the twin-stick shooter from Magicka creators Arrowhead, is free to play this weekend on Steam, and has just received a major update that adds ultra-hard difficulty levels and tough new enemies.

It's free until tomorrow 10am PST/1pm ET/5pm GMT (the clocks go back in the UK overnight tonight—don't forget!), and if you like what you see, it's on sale for $9.99/£7.99, which is close to its lowest ever price.