Actually, ScummVM is not a game, but it allows you to play point-and-click adventure games (like Monkey Island, Day of the tentacle, ...) on your mobile (or PC). I couldn't believe it until I had "Monkey Island 2" and "Flight of the Amazon Queen" running on my N91. BUT, 176x208 is definitely to small for these games. However, I can imagine that 240x320 could be sufficient.
From: http://www.scummvm.org
"ScummVM is a program which allows you to run certain classic graphical point-and-click adventure games, provided you already have their data files. The clever part about this: ScummVM just replaces the executables shipped with the games, allowing you to play them on systems for which they were never designed!
Some of the adventures ScummVM supports include Adventure Soft's Simon the Sorcerer 1 and 2; Revolution's Beneath A Steel Sky, Broken Sword 1 and Broken Sword 2; Flight of the Amazon Queen; Wyrmkeep's Inherit the Earth; Coktel Vision's Gobliiins; Westwood Studios' The Legend of Kyrandia and games based on LucasArts' SCUMM (Script Creation Utility for Maniac Mansion) system such as Monkey Island, Day of the Tentacle, Sam and Max and more. You can find a thorough list with details on which games are supported and how well on the compatibility page. ScummVM is continually improving, so check back often.
Among the systems on which you can play those games are Windows, Linux, Mac OS X, Dreamcast, PocketPC, PalmOS, AmigaOS, BeOS, OS/2, PSP, PS2, SymbianOS/EPOC and many more... "
Where can I get Monkey Island from? I searched the internet, but no result.
Remember that this is not a site for ask about it.... Monkey Island is a Trade mark and not public domain or shareware, in fact you can buy it if you want for the iPhone, a really great conversion.