The world is in chaos as stick fight, monster war, ragdoll io and draw for stickman invade Crafting tower castles, crowded city, defense castle and mighty party and many wars between armies of stick warriors, territories break out.
Therefore, you have to fight with high numbers of stick towers, hero war, Crowd of city and stick fight to gather an army to fight with other mighty armies, become the ruler of the world war io, running game, Castle Wars and tower battle.
Number stick I.O Defense has 2 game modes: Tower and Map.

Tower mode:
Fierce battlefield with countless enemies awaits you from everywhere in a war game, stickman battle, hero battle or crowd master. Try to pull your mighty stick 2D war, ragdoll io, draw for stickman and monster war hero to increase your score to unlock more power-ups, defeat enemies and explore the world 2d game or territories I.O. Collect hero io, gold and skins,.. and build your tower battle, endless war, army and Crowd of city.
This game mode combines puzzle games, war io, stickman combat, crowd game and mighty tower. The game fully converges the best resources from other exciting worlds such as Tower defense, stick warriors, crowd master and mighty tower to create a great experience when you join the game.

Io mode:
Bring together stick i.o, hero war, stickman battle and monster war warriors to clash with opposing mobs. Become the master of the crowd and lead your people until the end of this defense castle, endless war or Tower Puzzle. Fight with small numbers of stick towers and heroes io and stay away from Hero battles, doodle stickman, 2d game and stick fight in large numbers to preserve your population. At the end of each battle, you will free-to-play with the opportunity to increase your power and collect precious coins be like I.O game, stickman game, Fun math and Castle Wars.

FEATURES:
In the tower mode: The infinite number of levels to challenge. Stick i.o, hero battle, Crowd of city and stick tower in this game has beautiful visuals and various customizable characters. The end game, you will collect coins and it's free-to-play.
In the map mode: You are not a simple runner but the boss of a whole crowd of stick 2D war, stickman clash, doodle stickman and Crafting tower in puzzle games, crowded city, crowd run and stickman game. Gather your gang and lead them to the main clash of their life!
Educational running game. Count, increase and multiply the runners in your team. Choose the right number of crowded city people and win the most furious stickman fight or stickman clash in the new game Tower Puzzle.
Stickman combat, war io, Fun math and mighty party are fun 2D gameplay. Simple, realistic, and competitive look like war game, army run, stickman battle and I.O game.
Welcome to Number stick I.O Defense, the world of Tower defense, crowd run!