IndieGala has Gun Metal (http://store.steampowered.com/app/267920/) for free.
https://www.indiegala.com/birthday2015?clickid=wvjUJtUG4Q51wMqySTUbQxYMUkXXoC2hRRXW3g0
Scroll down to near the bottom of the page and locate the offer "Steam Giveaway"
Submit your email address in the provided box field and "Redeem" your offer
You will also have to complete the Captcha; check off 'I'm not a robot'
Your Steam code will be emailed to you within 1-2 hours.
Cool. thanks Steve.