Animal Vs Human : Farm at war
Fight to survive from horde of angry locals. Choose from a variety of guns and upgrades to create an ultimate killing machine!

Very Positive · 235 reviews
81% positive (190 / 235)











iO is an abstract physics platformer about size and speed. Grow bigger and smaller in order to solve some of the trickiest puzzles. Reach the exit as quickly as possible and grab a gold medal as your reward!
Released
December 5, 2014
Price
Platforms
macOS · Linux · Windows
Developer
Publisher
Last sync
September 25, 2026
iO is a physics platformer in which you control a ball. By growing or shrinking the ball you can influence its speed and weight. Use these mechanics to gain momentum and make your way through the levels. Toy with the laws of physics, solve the puzzles and reach the exit as quickly as possible. Can you win the gold medal in all levels?