It's been called one of the best space simulators ever made multiple times and is a well loved favourite by many - Freespace 2. And now you can get this classic for free for a limited time during the GOG Interstellar sale!
All you have to do to claim your free copy is sign in to your account, go to the GOG home page and click on the give away banner - but hurry, it's only available for a limited time!!
While you're there, check out the rest of the Interstellar sale - there's some excellent discounted space games like Masters of Orion, Space Quest (who doesn't love Roger Wilco?), Stellaris, System Shock 2, Surviving Mars and more!