http://www.kickstarter.com/projects/1294225970/kingdom-come-deliveranceThe link above takes you to a video about an upcoming game called Kingdom: Come Deliverance.
A first-person, open world, realistic RPG that will take you to Medieval Europe in a time of great upheaval and strife. A humble, young blacksmith loses everything to war. As he tries to fulfill the dying wish of his father, Fate drags him into the thick of a conspiracy to save a kidnapped king and stop a bloody conflict. You will wander the world, fighting as a knight, lurking in the shadows as a rogue, or using the bard’s charm to persuade people to your cause. You will dive deep into a sweeping, epic, nonlinear story from Daniel Vávra, an award-winning designer from the Mafia series. Our unique, first-person combat system lets you wield sword or bow in both one-on-one skirmishes and large-scale battles. All of this - and more - brought to life beautifully with next-gen visuals delivered via Cryengine.
Summary
Planned platforms: PC, Xbox One*, PS4*, Mac, Linux
Release date: Q4, 2015 on PC, Mac and Linux
Approx. gameplay time: 30 hours (Act 1), 70+ hours (all 3 acts)
That's the description they provide of their game, but if you watch the video itself and you are a lover of medieval RPG's like myself then donate just £5 to let the developers and researchers know that this game most definitely has a huge demand.