SPIRAL DEFENSE 10.03

Based on a spiral map remastered.

There are three concentric rectangles through which creeps pass, 40 levels. Build a few BASIC TOWERS in the Grassy Dirt area and improve them. Upgrade some POISON and ICE Towers to slow down the enemies. Do not build many towers at the beginning of the game, it is better to upgrade. Take care for targets allowed, some towers attacks land units only, others can target land and air units after level upgrade. Find the best place to build and good combinations for your towers. Manage them so that they attack on the first 2 circles and after the upgrades, some towers with a long range can attack up to the 3rd circle. Build the RESEARCH LABORATORY and perform the first 10 upgrade levels then RESEARCH INSTITUTE for Advanced Upgrades. All 3 upgrades are great for all types of towers, but you have less chances to finish them all during the game. Type commands in the game: -help, -air, -boss.