Keys are limited, act fast!
1. Go here
2. If you don't have an Alienware Arena account create one here
3. Click "Get key"
4. You should receive your Steam key in your e-mail inbox
GMG: 2015 Summer Sale: Day 7 - 20% off voucher: GMGSUM-MERSAL-E20OFF
Summer Mahjong [Free Game of the Day]
G2A: Weekly Sale - 3% Off Coupon: KINGS