Elf is an extension of PlayStation 2 game file format. It can be used with Playstation or PS2emu Emulator.
These are the game files that used by a game machine called Playstation 2. It states on Cd.
Similarly, Playstation3 and Playstation Portable systems also use same file extension. But the games which specially developed for any of these machines, can`t work with Playstation 2
If you want to play Elf files with Pc Windows system, you should download a software called Emulator.
There are different web pages allows you to get them free.
What to use ELF
PlayStation, PS2emu Emulator
which page related to ELF file
ELF Related Searches
You can check related links about ELF fileextension.