- A homebrew enabled PlayStation 3 console. As of now that mostly means having a custom firmware installed. Obtaining and installing such a software is out of the scope of this document. Sorry, but you're on your own for that one.
- At least one ScummVM supported game. The list of compatible games can be seen here: http://www.scummvm.org/compatibility/ The page http://wiki.scummvm.org/index.php/Where_to_get_the_games references some places where those games can be bought. Demonstration versions for most of the supported games are downloadable on http://scummvm.org/demos/
- An USB drive.
From a computer, download the installable package of the PS3 port from ScummVM's main site. It should be a .pkg file. Copy it to an USB drive.