Your mission should you choose to accept it: Defend Earth by setting up strategic defences and unleash massive damage on the invading fleet. Can you complete the mission in 20 turns? Mission Overview Player only have 20 turns to avoid space mines and destroy the Invaders fleet. You can perform only one of the following in a single turn: a) Upgrade your defence b) Attack the Invaders Player attack the invaders by upgrading defence points and connecting 2 upgraded defence points with a straight line. Any Invaders within the “box” that the line crosses will take a hit. Default (not upgraded) defence points cannot be used. A defence point is upgraded by circling it. Function of the defence point increases with the level of upgrade. Level 1 (represented by 1 circle) - allow player to connect to another defence point Level 2 (represented by 2 circles) - allow player to deflect an incoming connecting line to one other defence point Level 3 (represented by 3 circles) - allow player to deflect an incoming connecting line to two other defence point Combos Madness 3 types of defence point upgrade, 4 different types of Invader with different level of life-meter (some are tougher to destroy than other) and space mines which explode every time you crosses them. Players must plot their attack wisely to max out their mission score, those who destroy all the Invader Ships before the end of 20 turns get extra bonus points! Print and play: One PDF, thousands of mission The game come in a single PDF (black and white print cost friendly) which automatically generate random missions each time the file is refreshed on the Internet browser or reopened in a PDF viewer. Each mission comes with an unique mission code. You can reprint the old mission challenge by typing the old mission code over the newly generated one.