Elona is a wonderful Japanese (with an English option) rogue-a-like (CRPG-style game with similarities to Rogue, a sub-breed of roguelikes) with wonderful graphics, music, and gameplay. It has a day-night system, weather system, pet system, and many more small wonderful delights too numerous for me to mention.
It's really a wonderful game, with my only complaint being the leveled town missions. Go get it now! Five @'s.
Screenshot (not a good example of the art, unfortunately):