Old runequest 3rd edition is a winner. I think its 3rd edition im thinking of, ignore newere versions because there just not the same.
traditional runequest starts off a slower than d&d but plenty of magic and a good setting. Can as real or as fantasy as you want to it be.
If not to your fancy theres always warhammer fantasy, i know its fairly mainstream but its a good world and simple system, good magic and can be very gritty. Especially when you add critical hits to combat
i can go on if you have any questions