Draugen is a short exploration game with not a whole lot to explore, but its majestic Norwegian vistas and its amusing companion engagement make it worth the trip.
From the Ashes meshes well with the base game, and it might help you discover some overlooked side quests. The village building and management is interesting, but ultimately superficial. The conclusion feels somewhat anticlimactic.
Shadows: Awakening doesn't do much that is new or interesting, but it does achieve a mostly enjoyable ARPG experience that will appeal to diehard fans of the genre.
A short and mystical experience marred by several flaws, Gray Dawn falls short of its great potential.
Band of Bastards is essentially a short side quest consisting of five combat-driven missions and an extremely unsatisfying conclusion.
If you don't mind silly and over-the-top action scenes that make most people roll their eyes, A Way Out will provide some decent mindless entertainment to you and a co-op buddy for a few hours. Otherwise, this is one to avoid.
Seeker, Slayer, Survivor plays like filler DLC. It's below average and lukewarm at best, with very little of what makes an Obsidian RPG in the mix.
There was a lot of potential in Kingmaker, but also a lot of wasted potential. The developers might still be able to salvage this potential if they listen to criticism and are willing to overhaul the game in every possible way.
Beyond: Two Souls is an interactive drama action-adventure with painfully inept writing. Ellen Page's top-notch acting can only carry it so far until it falls apart in a terminally inane climax.
Even if you can get past the countless technical issues, Underworld Ascendant is a poorly designed abomination that ruins the Underworld series even to those who've never heard of it. This is the final nail in the Immersive Sim™ coffin. Bury it and salt the earth.