Zero Sum Walkthrough and Gameplay

Zero Sum is a unique and original puzzle game developed by Sean Kearney. On the eve of discovering a mathematical cure for cancer, Professor Claire Liddy is murdered. Fortunately, before she died, the Professor was able to erase many of the plus and minus signs with her bloody hands, saving the cure from falling into the hands of her killers. Now it is up to you to fill back in the missing parts of the equation and resolve your professor’s cure.

The game features a thrilling, 80s action movie-inspired storyline. There are a variety of different puzzle types and mechanics to keep things fresh. If you get stuck in the game, check out the video walkthrough and gameplay for the game.