Shoot up IO is a game where you test reaction and ability to make crucial decisions fast. Type in your name and enter the battleground where you kill zombies side by side with other online players. Pick up weapons, medkits and bullets to resist the attack. Upgrade the character and reach the top of the ladder.
Use shotgun. Eliminate enemies....
Edit screen. Complete levels....
Destroy swarm. Shoot aliens....
Select upgrades. Win battles....
Enjoy open world. Upgrade gear....
Enjoy teamplay. Upgrade character....
Beat zombies. Collect cards....
Shoot zombies....
Reach flag. Dodge monsters....
Explore story. Click and select....
Enjoy transformation. Use tools....
Use a mower. Upgrade for next stage....
Upgrade attacks. Clear stages....
Fight and win. Unlock skins....
Earn tips. Manage cars....
Rescue girl. Blow core....
