Dark Omen pillars
- Immersive battles
squads oriented, slow-paced with focus on tactical maneuvering and micro-management of moderate-sized troops rather than grand armies confrontation, button mashing power-ups (e.g. strength boost) - Tabletop rules adherence (which emphasizes medieval warfare simulation)
combined arms, formations, flanking, line of sight, terrain advantage, troops morale, etc - High fantasy setting
mythic races, terrifying monsters, powerful sorcery and artifacts - "Alive" units
Unique units, leaders flesh-out personalities, in-depth background, special abilities, yelling/talking leader portraits. All these emotionally attach player with units and make him care about them.
It is also worth to mention entertaining narrative in Dark Omen single-player campaign as well as music and sfx which greatly helps to pass tense of battle
features prioritization example by using pillars:
References to discussions of DO unique features (USPs):
- http://forum.dark-omen.org/omg-wartbed/suggestions-t321.0.html
- http://forum.dark-omen.org/tavern/why-do-you-adore-dark-omen-t1348.0.html;msg13622#msg13622
- http://forum.dark-omen.org/tactical-wargaming-and-other-warhammer-games/any-other-games-with-some-of-dark-omens-mechanics-t1201.0.html
- http://forum.dark-omen.org/general-suggestions/question-about-the-remake-project-t1338.0.html;msg13877#msg13877
- http://forum.dark-omen.org/general-suggestions/leopotams-unity-3d-dark-omen-possible-remake-project-t1135.0.html