The Public Test Universe is "a version of the game that offers experimental versions of upcoming patches". It offers a voluntary way for backers to access the most up-to-date patch developments and features. On it's release the PTU offers players an early version of Arena Commander 1.01 patch. The RSI website urges only backers who aren't of "the faint of heart" to participate as there are will be many bugs and crashes in the PTU patches. The PTU is a temporary access program and they will be utilizing it when needed by Cloud Imperium's team of programmers.