.spa is a file format created to hold compact 2D moving graphics for your games. Creating spa files is built to be quick and easy so your designers can test and retest animations with minimal effort.
Quick Start Guide – How do I make an spa file anyway?
Download – Download the SPA creator (Currently windows only) here in a zip (~320kb, no install needed).
Advanced users – Hook the creator directly into your toolchains, view the docs, or compile the creator yourself.