Oh man, this is deeply nerdy. This fellow Phill’s girlfriend was playing Chrono Trigger using an SNES emulator, and he hacked the ROM she was using, adding an entire new area (“Koma Kulshan,” an old name for Mt. Baker, I’m guessing this guy is from the NW like me) filled with NPCs acting out the couple’s favorite memories. At the end, there is apparently going to be a boss battle, but it comes to a peaceful (and romantic) conclusion. Awww!
One thing I wish was that after the proposal dialogue, there had been a “Accept proposal of Marriage? Yes/No” box that popped up. That might have been a little too much pressure, though.