Orthoiso
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About Orthoiso
Orthoiso is a platformer puzzle game built around optical illusions. You switch between three different views to solve puzzles using mechanics based on those illusions. Its orthogonal projection makes distant objects in 3D appear close on a 2D screen, letting you achieve things that would be impossible in the real world.
Iso’s search
You play as Iso, a little frog whose father is a famous adventurer. After his father goes missing on a recent adventure, Iso sets out on an adventure of his own to find him.
Frequently asked questions
The best price for Orthoiso is $0.99 at Steam. It is the only shop with an offer that activates in your country.
The minimum requirements for Orthoiso are: Windows 7, Intel HD Graphics, Intel Core 2 Duo, 1 GB RAM, 200 MB storage. It also runs on macOS. The recommended specs are in the System requirements section.
No. Orthoiso is a single-player game.
Yes. Orthoiso is the full base game. You need nothing else to play it.
Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.
Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.











