https://www.gamespot.com/articles/move-over-steam-sale-some-games-are-cheaper-at-gmg/1100-6459981/

The Steam Summer Sale isn't the only deal in town for PC gamers. Green Man Gaming is also running a sale, and if you enter promo code JUNE20 at checkout, you'll get an extra 20% off most of the already-discounted games. That amounts to some serious savings on a number of worthy games. You can find the full list of games on sale here, or read on for the highlights.

That extra 20% off bumps many of these deals in to best-ever territory. PUBG, for instance, normally sells for $30, but it's on sale for $20. Take 20% off of that, and you're looking at a final price of $16. Not bad at all. Cuphead has a similar thing going on, landing it at $13.