Run

Run is a fast-paced platformer where you control a small alien sprinting through a tubular course suspended in space. The goal is simple: survive as long as you can by jumping over missing tiles and avoiding falling into the void. Originally a Flash classic, this HTML5 version brings the addictive gameplay to modern browsers.

The defining feature of Run is its unique gravity-shifting mechanic. Whenever you step onto a wall or the ceiling, gravity automatically flips, allowing you to stick to that surface. Master this ability to navigate treacherous paths, dodge holes in the floor, and find safe routes. You can sprint sideways, jump to the ceiling, and chain flips together to survive.

In Adventure Mode, you'll progress through a series of levels that get faster and more complex as you go. Completing one tunnel unlocks the next. If you fall, you'll instantly respawn at the start of the current level. For an extra challenge, try switching from 'normal' to 'fast' speed in the main menu before you start your run!

If you love the gravity-bending action of Run, be sure to check out its sequel, Run 3D, which adds new visuals, more levels, and expanded mechanics to the classic formula.