**Fair warning, this game was developed with the PS2 in mind, the PC version doesn't control as well and sometimes camera panning doesn't work. Same with a few nonconsequential interactions. Also there is, to my knowlege, no way to enable gamepad support.
The story of this game revolves around a young boy named Joseph, who was born with the mark of the summoner. When raiders descended upon his childhood village, he summoned a beast from his ring to fight off the invaders, but he was too weak to control it, so it slaughtered everyone except for those who could escape. Out of his disgust of his power and his inability to control it, he threw the ring down a well and exiled himself, only to have a foreign military attack his new village in search of him, thus leading him on a quest to find his old mentor and reluctantly get involved in the world's events.
The combat consists of left clicking on a target, and waiting a bit. You could cast a spell then open a menu to cancel the spell's start up if you want more hands on, or you can manually chain your attacks as well, tho there's little reason to until you get to a certain point.
The party you get is only 4 members plus one summon. The members you get are just a standard main-hero jack of trades, a rouge, a spell caster, and a warrior-- Pretty standard. But how the game handles summons is more interesting. Only the main character can Summon, and he has to wear a ring to do so (thus giving up a slot for bonus stats). Also if he gets downed after summoning, the summon goes rogue and you must kill it before you can summon again without leaving the area, but beyond that, summons are permanent until you reach a new area, it dies, or you banish it. Beyond that, you can jump in between control of your characters and even move them around individually (which is required for a few parts of the game), though beyond that, there is not much else.
The lore is the strongest part of this game, where every NPC has something to say, either it be some snippet about their daily life or how the nations are interacting with each other. There is even a whole religion you can learn about and you can find how skeptical other people may be of it. There's not a whole lot I can say without spoilers or just saying things, just if you like talking to NPCs, there is certainly a lot to be found here.
For voice quality, this IS an early 2000 game. The voice acting is okay, but there are repeated lines and sound effects galore. Like every time Joseph levels up, he says "I grow more powerful." in the most dead-panned way, and there are only so many times you can hear the same grunt sound over and over. I have a tolerance to these kind of things, so I wasn't bothered too much, others may be though.
The music in this game is overall down to preference. It has a very 2000s feel to it, but the soundtrack services this game just fine, although the first city's theme may wear thin after a while because it's constantly retarting from going between area and area a lot, and also you may be there for a few hours if you side-quest, and being stuck in large areas just has the songs drone on. However, the game does have individual sound sliders, so you can just mute the music and play your own.
Back in the day, Summoner was an unrecognized game that was very good for what it had. It's still true today, but how the game aged may turn some people off from it. This is a game that doesn't push any boundaries by any modern means. However, it is still worth checking out if you enjoy stories.