There has yet to be a swords and sorcery game published through the OSR. I'm really surprised by this.
Some games claim to be S&S, but are really just D&D with some S&S trappings. Seriously, if your "Swords and Sorcery" game has PC clerics and requires a group, then it's not S&S. You may pretend it is, but you are lying to yourself and your customers.
What an S&S game needs:
1. One or maybe two players. No more than that.
2. Fighters and rogues are normal, and they should have a good chance of defeating a powerful NPC mage.
3. Fighters and rogues "heal" between encounters. They don't have to stop just because they've been in a big swordfight and got stabbed a couple times.
4. No clerics!
5. No paladins!
6. You can have a mage as your character, but he should be a fighter-mage, in armor and wielding a sword, NOT a robe-wearing wimp with a spellbook.
7. Magic should be evil and corrupting. There may be some "good" magic, but the vast majority of it requires the mage to be evil as heck.
8. Humans are the majority race, by a long shot. If an elf is seen, he's going to be the only elf the locals see in their entire lifetimes, and legends will arise about him, even if all he did was ride through town and not even stop.
9. Lots of giant toads, giant snakes, and other giant critters. Many of whom will be worshiped as gods, even though they are just dumb animals.