HexArena.io is a tower defense game unblocked where you will win if you can build the strongest army and occupy the largest territory. From the small starting area, you can expand it by taking control of lands around. Aside from attacking, you need to defend what you gain when you play HexArena.io free online. Survive, thrive, and try to climb up to the highest position as soon as possible. Enjoy and remember to check new iO games! Have fun!