Not one to be left out of all the summer video game sales, GOG.com has begun its Weekly Sale Vol. 20. With up to 90% off many beloved games, the retailer has sweetened its deals by giving anyone who makes a purchase on GOG.com during this week a free copy of Double Dragon Trilogy.

Among the highlights: Rayman Origins, Shadow Tactics: Blades of the Shogun, Hollow Knight, System Shock 2, The Witcher 3: Wild Hunt GOTY, Caesar IV, and Pillars of Eternity.

The Weekly Sale Vol. 20 concludes July 3, 2017, at 10PM UTC. More details are in the press release below.

Just when you thought this blissful downpour of deals was at its end BOOM! – our massive Weekly Sale Vol. 20 comes around to prove you wrong. Look at these sweet sweet discounts – and all you have to do is stick your tongue out and taste them! While you’re at it, don’t forget to take advantage of our special offer: make a purchase on GOG.com during this week and a FREE copy of Double Dragon Trilogy is yours.

Now let’s go check out some of the hot stuff that’s on discount:

That’s how platformers should be: fun, colorful, energetic, and playable with friends. Rayman Origins excels in all those areas and is full of spectacular-looking areas for you to explod— ermm explore. You really don’t want to miss out on that one.

Nothing short of a modern classic,  Shadow Tactics: Blades of the Shogun brings back the isometric stealth/strategy genre and gives it a welcome brush-up and a wonderful Japanese spin. The end result is an addictive must-play experience for all fans of the Commandos series.

But that’s not nearly all of them. There are 70+ deals here, including Hollow Knight, System Shock 2, The Witcher 3: Wild Hunt GOTY, Caesar IV, and Pillars of Eternity, among others!

The Weekly Sale Vol. 20 will last until July 3, 10PM UTC.

NOTE: Your free copy of Double Dragon Trilogy will arrive in a separate email. Make sure to redeem it right away – the codes will expire on July 10, 21:59 UTC.