A downloadable pack for Total War: Shogun 2, Rise of the Samurai moves Shogun 2's gameplay from the Muromachi period (1500s) to the Heian period (1100s), with appropriate changes in art, units, and strategies.

An open-world sandbox game in the vein of Grand Theft Auto, Sleeping Dogs has a unique locale (Hong Kong) but not much new in the way of gameplay.

A classic-style fantasy Adventure game, The Dark Eye: Chains of Satinav offers some mixed-quality visuals but good fundamentals.

In Grotesque Tactics 2 - Dungeons and Donuts, you play as Drake, a smartmouthed adventurer trapped in a labyrinthe complex (along with many others) by a lethal purple fog.

An experimental first-person game created by the University of Portsmouth, Dear Esther attempts to create an artistic experience using a deliberate lack of gameplay.

An updated and upgraded version of the classic artillery game Worms Armageddon, Worms Reloaded features more of the same madcap humor and skill-rewarding gameplay that characterized its predecessors.

A third-person horror game, Alan Wake delivers an interesting narrative alongside a reasonably standard set of game mechanics.

"Napoleonic Wars" is an officially-backed mod for Mount & Blade Warband delivering 19th-century combat in the engine of the well-known medieval game. It costs $10 on Steam and requires "Mount & Blade: Warband" to play.

I adore Zoo Tycoon games. With Ultimate Collection - Zoo Tycoon 2 - you get the base game plus all the expansions, in one neat package.

The second downloadable content pack for "Total War: SHOGUN 2", Fall of the Samurai deals, naturally, with the end of the samurai era and the beginnings of modern Japan.