Okay, found my games again. Turns out they were left on a counter-top in the apartment. Whew. So it's back to working on the Advance Wars maps for me.
Which brings me to an interesting thought: why did I bother with all these games? I've spend nearly all my time with Animal Crossing and Advance Wars, and maybe a NY Times Crossword puzzle here and there. Just a matter of time, really. My teenage days of doing nothing but playing videogames are - thankfully - long past.