This repository contains the Poisson game files, it is recommended to use Adobe Flash CS6 to compile the swf. Servers are available for languages C, C++, C#, Java, Lua, Javascript (NodeJS), Python and PHP.
Poisson (French for "Fish") was a predecessor to Aaaah! posted on Extinction, with mechanics similar to Transformice in terms of gameplay and objects. It was only online for a few months until Transformice was released.