10 Best Video Games You Can Complete In One Sitting

When it was released back in 2007, Portal soon became a significant influence in the gaming industry due to its success and unique mechanics. This led to many players becoming familiar with Aperture Science and, of course, GLaDOS, the overseer of the facility, who may not have your main character's best interests at heart, despite what she claims.

Playing as a test subject, Chell, the player must try to solve increasingly difficult puzzles with the use of a Portal Gun, which can- very conveniently- rip adjoining holes in the very fabric of reality which you can travel through. Nifty!

It is a simple concept, which is easy to understand, but can be difficult to master as the rooms become harder and harder to navigate and GLaDOS' commentary becomes increasingly more erratic and darkly bizarre, adding to the atmosphere of increasing menace.

Mastering the mechanics and trying to uncover the mysteries behind Aperture Science makes for compulsive playing, even a decade after the game's initial release.

The satisfaction of completing a particularly challenging or tricky puzzle will keep players invested, as they plan to "just have a look at the next room" until they reach the end.