I had a look around and found that Piero Orsoni and Luca Donaggio had ported Magnetic for the 770.http://www.opbyte.it/maemo/
There do not seem to be any updates. I was going to try Kronos (magnetic and frotz combined) on garnet but the instructions say all game files need to be on a memory card and garnet does not support these. Links to versions of Magnetic http://msmemorial.if-legends.org/magnetic.htm
I am going to try the Nintendo versions once I prise a DSlite off one of the kids.