Mahjongg Dimensions 640 seconds is like a super fun puzzle game where you match cool tiles! You have 640 seconds to find and click on pairs of matching tiles in a 3D cube. It spins around, so you have to look really carefully from all angles. When you match them, they disappear with sparkly effects! It’s like a magical treasure hunt! If you match all the tiles before time runs out, you win! There are fun power-ups that help you, like stopping the clock or showing matches. It’s super exciting and makes your brain do fun flips!