PCSX2 zzogl-dev SVN r4924 is released. PCSX2 zzogl-dev is a branch of PCSX2. PCSX2 is an open source PlayStation 2 (PS2) emulator for the Microsoft Windows and Linux operating systems. With the most recent versions, many PS2 games are playable (although speed limitations have made play-to-completion tests for many games impractical), and several games are claimed to have full functionality.