Here we are, Friday and another long, sweet weekend ahead to enjoy. Whatever your plans are, let me recommend you a great Flash online game that will challenge your logical skills, concentration, mouse speed and spatial coordination.

It's called Stackopolis and it could be defined as a logic puzzle with some Tetris elements and cute pixel graphics. Your mission consists on building different city elements by arranging blocks on the screen. You're given a hint (called "blueprint") that shows how the final building should look like, and you only have one minute to reproduce it on the playing area.

Stackopolis features a bunch of levels, each one with a different building. Also, there's a unique access code to each level, so remember to write them down as you progress through the game.