Impossible Parkour 3D

Twenty-five levels and you still won't finish this one in a day - that's the actual point of Impossible Parkour 3D. Every level throws something new at you, so the moment you think you've got the rhythm down, the game changes the rules on you.

This is jumping, timing, and gravity all working against you at once. You'll be running, leaping across gaps, and hoping your landing lines up before you even think about it. Miss the timing once and you're starting the level over, which is exactly why it's so hard to put down.

If you've bounced off other Action games for being too easy, this one won't have that problem. It plays straight in the browser on desktop, Android, or iOS, no download required, so you can jump in whenever the itch hits.

Want something with a similar drop-and-die tension? Deadly Descent scratches a similar itch if you're after more falling-based chaos.

Get through each of the 25 levels by jumping, running, and timing your moves around obstacles that are built to trip you up. One wrong step and you're restarting, so precision matters more than speed here.

On PC, use WASD or the Arrow Keys to move and Space to jump. On mobile, use the on-screen joystick and buttons - there's an in-game tutorial if you need a refresher.

Take each jump slow at first. The levels are designed to punish rushed moves, so learning the gap before you leap saves you a lot of restarts.