iO
Gamious · 2014 · Indie, Action, Racing, Physics, Puzzle
PC
Very Positive81% · 102
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Screenshots
About iO
✦ AI summary
Control a ball you can grow and shrink to manipulate speed and weight through 225 physics-based puzzle platformer levels filled with gravity inversions, portals, and devious obstacles. Race against friends on leaderboards and chase gold medals by mastering momentum, timing, and creative use of the game's physics mechanics.
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?
Features:
- 225 challenging levels to solve, including the extra tough Impossiball Levels.
- Crafty mechanics like inversed gravity, portals, tricycles and movable objects.
- Leaderboards in all levels to race against your friends and other iO players.
- Bronze, Silver and Gold medals to earn.
- Dual Stick controller support.
What Steam players say
Recent verbatim reviews from Steam — separate from playze.io community reviews below.
Fun addicting game when bored1 found this helpful
iO, developed and published by Gamious, is a minimalist physics-based platformer that builds its entire experience around a single, elegantly simple idea: controlling a ball that can dynamically change its size to manipulate speed and momentum. While the concept may initially seem modest, the game quickly reveals a surprising level of depth, transforming that lone mechanic into a layered and demanding test of precision, timing, and spatial awareness. It’s the kind of design that thrives on restraint, proving that complexity doesn’t always require a multitude of systems—just one well-executed core. The moment-to-moment gameplay is where iO truly distinguishes itself. Players must constantly adjust the size of the ball to navigate slopes, gaps, and obstacles, carefully balancing weight and velocity. Enlarging the ball increases its mass, making it easier to maintain momentum and resist sudden disruptions, while shrinking it allows for quicker acceleration and sharper control. This interplay creates a dynamic flow that feels both intuitive and challenging, as every action directly influences how the ball behaves within the environment. The physics are impressively consistent, which i…
The levels are pretty clever and the physics tolerable.
Though this game is a bit challenging, it is fun to play and figure out how to reach the end. Even with the simple mechanics, there are a lot of tricks available to take advantage and beat the level. ++
A unique puzzle game. Like all puzzles games, this one has way too many levels and it's boring. Though let it be known I hate puzzles games, unique or otherwise. Honestly, just watch the trailer. If it makes you say, "gee, that looks fun!" (or some semblance of that) then buy it. You'd probably enjoy it.
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