Originally Posted by Maximuuus
Backstab = advantage if you attack the back of ennemies.
Sneak attack = rogue feature that deal additionnal damages if he attack with advantage.

Backstab isn't equal to sneak attack.
No one is supposed to have such easy advantages, whatever we're talking about the rogue or any other classes.

From a discussion 4 years ago:

If a creature is unseen, it gains the benefits of "Unseen Targets & Attackers", on PHB p194-195. If you're attacking a creature which can't see you, you have advantage on the attack.

There are option rules about "facing" in the Dungeon Master's Guide, p252, but that would be up to your DM whether they use those rules or not.

The "Sneak Attack" feature of the rogue (PHB p96) is meant to represent backstabbing, sucker-punching, and other ways of getting in a more powerful attack on a creature who is distracted or unaware.

If you want to backstab someone, the game doesn't specifically have a "backstab someone facing away from you" rule.

But, according to the Sneak Attack rules, you can get the extra sneak attack damage in a number of ways:

If your target doesn't see you, then you have advantage on the attack,

OR if you have advantage on the attack for any other reason,

OR if another enemy of your target is within 5 feet of it.

If you can get sneak attack damage for any of those reasons, you can narrate what you're doing as stabbing them in the back.

Was this individual wrong?

https://www.reddit.com/r/DnD/comments/5fqey2/hiddenbackstab_atks_on_5e/