Two days ago I found Dink Smallwood - a free modular rpg with full source available. The linux-sources (windemere) are available, too here, although nobody seems to have found them yet: http://www.dinknetwork.com/display.cgi?action=File&ID=521
I think a MOS-port before an offical linux-build wouldn't be the badest thing - the dependencies should be all already on mos.
PS: There also was a sourceforge-project from the same author of the above code, but it's closed...
With some minor glitches within openal-dependend parts it builds fine under linux-ppc, but unfortunately these sources from above use a special PAK File System & I was not able to make a compatibel PAK from the game-data. (I found somewhere a prog called par-0.0.3.01 which creates quake-PAKS, but unfortunately it doesn't seem to be compatible :( )
Would be really cool to see this very famous game rocking on a peg!