Back in 1989, Square released “SaGa” for the original Game Boy in Japan. A year later, the game was released in North America under the new title “Final Fantasy Legend.” The game was a full-fledged RPG that involved the player assembling a party and finding a way to enter a massive tower at the center of the world. This tower, it turned out, would lead to other worlds and, eventually, to “Paradise.” It was a relatively novel idea at the time and made for a solid, portable RPG experience.
Sadly, the game was never remade for non-Japanese audiences. In Japan, however, the game was remade in a 16-bit style in full-color in 2002 (just like “Final Fantasy” and “Final Fantasy II” were not long before them) for the WonderSwan Color handheld system. ”SaGa 2? was remade for the Nintendo DS in 2009 (in celebration of the series’ 20th anniversary) and “SaGa 3? saw a DS release in Japan in 2011. At least Western audiences did get the full-on remake of “Romancing SaGa” in the guise of “Romancing SaGa: Minstrel’s Song” on the PS2 in 2005.
This obviously requires you to find a ROM for the game as well as an emulator that can play them, and while I should not tell you where to find the ROM (you can Google that yourself), I would recommend getting OSwan as your emulator.