What version of Divinity is the most recent?
Divinity is a series of video games. Of those, Divinity: Original Sin 2 is the latest entry.
- Divine Divinity is the first game in the series, an action RPG that was released in 2002
- Beyond Divinity is also an action RPG, released in 2004, which takes place 20 years after the events of Divine Divinity
- Divinity II is another action RPG, released in 2009, and takes place about a thousand years after Divine Divinity
- Divinity: Original Sin is a prequel to Divine Divinity and, unlike the original, uses a turn-based combat system. The game was released in 2014 and takes place thousands of years before Divine Divinity
Divinity: Original Sin II is the latest game in the series, a turn-based RPG released in 2017 that takes place four years after Beyond Divinity.
Divinity: Original Sin II - Definitive Edition is a free update to Divinity: Original Sin II, not a separate re-release. This update mostly consists of small balance changes, some additional bits of lore, and more voiced lines.
- Divinity: Original Sin II - Divine Ascension is "DLC" for Divinity: Original Sin II, consisting of digital soundtrack, art books, and maps.
- Additonally, Divinity: Dragon Commander is another game in the series, a mix of strategy and action RPG released in 2013.
Since you asked about Steam, this is the complete version: Divinity: Original Sin 2 - Definitive_Edition.
Divinity: Original Sin 2 - Divine_Ascension this is only concept arts and soundtrack DLC for the game, it doesn't add any gameplay content.
Other things you mentioned are previous games in series:
Divine Divinity (2002);
Beyond Divinity (2004);
Divinity II: Developer's Cut (2009);
Divinity: Original Sin - Enhanced Edition (2014).
All of games in series are also included in this bundle DIVINITY: ORIGINAL SIN 2 - ETERNAL EDITION