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Visual novels are interactive stories. They focus mainly on character development and plot rather than action and gameplay mechanics.

Inspired by (or directly containing elements of) storytelling and visual design that are otherwise most commonly seen in Japanese animation.

A gift-giving holiday celebrated on December 25th around the world, Christmas-themed works often incorporate depictions of snow, presents, or nods to its red and white-clad figurehead, Santa Claus.

An otome game is a story based video game that is targeted towards the female market. Generally one of the goals, besides the main plot goal, is to develop a romantic relationship between the female player character and one of several male or female characters.

http://en.wikipedia.org/wiki/Otome_game

Games that can be played alone