Lower the poly count

Hi,

I made a high resolution model for an animation, but now im wanting to use that same model for a game, is there a script or button that im missing that lets you lower the poly count of your model, kinda like a reverse subsurf?

Thanks in advance

You can try the decimate modifier (Edit buttons, Modifier panel).

You could also use the retopology tool to model a second one, using the original as the mold. It has more control-able results than decimate usually does.