The Battle of Polytopia for PC or Mac (Epic Games)

While that's only $2 under what you'd pay to snag this co-op survival game from Steam, a free game is a free game! Shop Now at Epic Games Store

You'd have to pay at least $6 to snag this wild top-down co-op racing adventure game elsewhere today. Shop Now at Epic Games Store

You'd have to pay at least $3 elsewhere to snag this indie turn-based strategy game in which humans must control giant mechs to defeat an alien invasion. Shop Now at Amazon

You'd have to pay the full $5 list price to snag this adorable indie puzzle adventure game from the Humble Store today. Shop Now at Epic Games Store

While that's only a buck under what you'd pay to grab the game at Steam today, a free game is still a free game (as long as you're a Prime member, that is). Shop Now at Amazon

If you were to grab this collection from GOG direct, it would cost you $5 today. Included are the first Dungons & Dragons games brought to the PC back in 1988 — the first 4 Dragonlance role-playing modules, including:

• Heroes of the Lance
• Dragons of Flame
• War of the Lance
• Shadow Sorcerer

It would cost you at least $5 to grab this indie puzzle platformer from any other retailer today. Shop Now at Amazon

It would cost you $8 to grab this game anywhere else today. Shop Now at Amazon