I recently played through Guardian's Crusade, (Japan name: Knight and Baby) a PS1 RPG developed by Tamsoft and published by Activision. It was an extremely charming game that evokes tons of nostalgia, though I fear it was completely overlooked due to it being a simplistic game with cartoony graphics released during a time when RPGs were pushing the limit in terms of storytelling, graphics and gameplay (it came out in the west the same year as FF8 and Star Ocean 2 for instance).
Gameplay is likewise fairly orthodox... Turn-based, menu-driven battles where you and Baby battle it out against some cute, goofy-looking enemies. But, there are a few caveats. You can summon one of 70 "Living Toys", each of them with their own effect (a "Coin Toss" like attack where you can sacrifice cash for a powerful attack, a bomb that detonates in 3 turns, causing massive damage to everyone, your requisite buffs/debuffs, and other weird stuff like being able to mine for gold on the world map or a toy that provides commentary during battle). Your monstrous companion, Baby, may also not choose to obey your orders if you don't keep him happy by feeding him and ordering him around in battle. That's right, there's a virtual pet-like aspect to the game where you can train your monster, have him fetch goods. For those not into the virtual pet aspect, don't worry since it's none too imposing.
Music is decent, it has a slight funky and low-key edge. No rousing orchestra or intense buttrock as cliche for the genre, but there are a few lovely tunes such as:
the disco-y battle theme
the jazzy cave theme
the melodic, somber tune that plays in the game's final town
the 90's hiphop sounding Castle Ryan
Apparently the creator of the game, Tamsoft, is still around making console/handheld titles and didn't close shop or go the dreaded mobile/pachinko route like most small Japanese companies tended to do. They're probably now known best for the Senran Kagura titles of all things
Overall, a highly-recommended game for anyone looking for a charming, forgotten RPG. Great for newbies to the genre as well. Best of all, prices aren't ridiculous like many PS1 RPGs. I got mine sealed for $25 plus shipping.