About the game

ZombieThon is an arcade shoot ‘em up, with the goal of each mission being to survive as long as possible and to use any means to do so. Upgrades could come in the form of bouncing bullets, split shot, or even a few special upgrades that are nothing short of a natural disaster. Features Single-player mode, for those that like a challenge. 2 to 4 PLAYERS in Scaling Online Multiplayer. Lots of different upgrades and combos for your weapons. Special bullet abilities. Unlockable characters in each level. Unique character abilities. 3 maps with more on the way. Infinitely scaling waves.

How to activate

Go to: http://store.steampowered.com/ and download STEAM client Click "Install Steam" (from the upper right corner) Install and start application, login with your Account name and Password (create one if you don't have). Please follow these instructions to activate a new retail purchase on Steam: Launch Steam and log into your Steam account. Click the Games Menu. Choose Activate a Product on Steam... Follow the onscreen instructions to complete the process. After successful code verification go to the "MY GAMES" tab and start downloading.

System requirements