Downloading Transformice by PsygX™ 5.0.0.3266 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available. The Transformice by PsygX™ installer is commonly called Settings.exe or Tmice.exe etc.
Also the tool is known as "Transformice by PsygX". The following versions: 5.0 and 4.2 are the most frequently downloaded ones by the program users. The actual developer of the free software is PsygX™. The software lies within Multimedia Tools, more precisely Editors & Converters. We recommend checking the downloaded files with any free antivirus.
From the developer:
Mice represent Transformice users. Every round, mice interact and compete with one other to return a piece of the cheese to a mousehole with the fastest time possible. Physical objects created by the shaman mouse or spawning with the level are affected by the movement of mice, and vice versa.
You may want to check out more software, such as MiceForce, which might be similar to Transformice by PsygX™.