If you've ever heard of video game emulation before, then you've probably heard of OpenEmu. It allows you to easily play classic games on your Mac's and PC's. 

Now OpenEmu has received a huge update that allows you to play classic games from PlayStation, Nintendo 64, Sega, Atari and others on your Mac. Support for 16 new consoles has been added, in addition to real time gameplay rewind, enhanced screenshot organization, improved home brew support and various interface upgrades.

These are the 16 consoles that are now supported:

1. Atari 5200
2. Atari 7800
3. Atari Lynx
4. ColecoVision
5. Famicom Disk System
6. Intellivision
7. Nintendo 64
8. Odyssey²/Videopac+
9. PC-FX
10. SG-1000
11. Sega CD
12. Sony PSP
13. Sony PlayStation
14. TurboGrafx-CD/PCE-CD
15. Vectrex
16. WonderSwan

OpenEmu is totally free and can be downloaded here.

When you download the ROM's for the emulator please make sure you already own the game first.