If you're a fan of mind-bending puzzlers like Portal 2, Antichamber, and The Witness, then the QUBE games are a must-play. Setting you on a series of increasingly complex puzzle rooms in the style of Valve's Portal games, QUBE and QUBE 2 are two of the most satisfying games I've played, and something I'll recommend as a must-play for any Portal fans out there. Fortunately, you can get both as free PC games right now – so don't hesitate.
Stylized as Q.U.B.E. and free PC games, as long as you're quick.
I played the original QUBE when it first arrived back in 2012, being immediately taken by the sight of another brain-scratcher in the mold of games such as Portal 2, and came away immensely satisfied. The difficulty ramp up feels slick and gives you time to learn the basics, but there's plenty of depth and variety to be found as you progress through its extensive campaign, which also features a story that will quickly have you on the edge of your seat just as effectively as games such as Portal or The Swapper.

This free bundle includes both QUBE 2 and the QUBE tenth anniversary remake, which includes a new chapter, director's commentary from the team at Toxic Games, and level editor, along with full RTX and DLSS to help the game's clinical but beautiful visuals shine even more.
The QUBE Ultimate Bundle, including QUBE 10th Anniversary and QUBE 2, is a free game via the Epic Games Store from Thursday October 12 to Thursday October 19, 2023. It's yours to keep once you claim it. You can head multiplayer game Blazing Sails available to claim for free.
After even more great games that won't cost you a thing? Head over to the Valve storefront and check out the best indie games on PC for plenty more bangers from smaller teams.