Styx: Master of Shadows is releasing on October 7, 2014 through Steam. But if purchasing Styx: Master of Shadows before October 13, you receive a 20% discount. Here is the description of the game from the Steam Store:
“Deep inside the vertiginous and multi-layered forsaken Tower of Akenash, where Humans and Elves protect the World-Tree, source of the Amber – a powerful and magical golden sap – is hidden Styx’ chance to understand his true origin… and to make a fortune at the same time. Prowl through the huge, miles-high Tower of Akenash, completing various missions (assassination, information recovery, etc.) and avoiding detection. Progress in the shadows, assassinate your targets in close combat, or orchestrate “accidents”. RPG mechanics let you unlock new powerful skills, impressive special moves, and an optimized equipment. Amber will grant you spectacular powers such as invisibility, “amber vision”, and the ability to clone yourself. Explore the levels to discover every bit of information about your past, and steal prized treasures to acquire equipment upgrades. Embrace the shadows!”
Styx: Master of Shadows through Steam requires Windows Vista SP2, Windows 7 or Windows 8 to run. Steam Achievements and full controller support is included as well as Steam Trading Cards. Styx is also alvaliable on Xbox One and PS4.