Download of zerosum 1.0 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The following version: 1.0 is the most frequently downloaded one by the program users.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. This free software is a product of Ihsan. ZEROSUM.EXE is the most common filename for this program's installer. Zerosum lies within Games, more precisely Puzzle.
From the developer:
ZeroSum puzzle is played on a square grid filled with numbers and +- signs. The objective of this game is to make a given sum of numbers by navigating through a grid of numbers and associated +- signs. Can use 5x5 grid for young children and 9x9 for experts with a lots of visual thinking.
You may want to check out more software, such as Christmas Quest, Shortline Express or Play Basic Learning Edition, which might be related to zerosum.