*Note, This is a work in progress, so don't be too critical. NOT A MOD OF THE POWDER TOY* I have made a new air particle simulator. download it here. left click to add air right click to add wall + to increase brush size - to decrease brush size requires .NET 3.5 or MONO.
I actually used AgateLib with openGL, but the original version was just a simple AI test (red dots eating blue) with winforms but I improved it into a air sim with Agate.
And it was a AI project I asked triclops200 to work on, but we both noticed it looked like how gas moved in the powder toy, so he converted it to this.