The object of Symbiosis is to strategically seed plants in order to get rid of hostile alien crystals. This tower defense game has lots of challenging levels and fun graphics. Use your mouse to plant seeds to expand your range, increase their attack, defense, and growth power, and share that power between plants. Gain experience as you complete each new level and upgrade your plants.
Surfnetkids » Games » Shooting Games » Tower Defense » Symbiosis