Unlike the U.S. and U.K. bestseller charts where mystery / thriller genre novels typically dominate the market, erotica and
romance titles fill up the entire Top 20 in Germany reflecting the majority of reader's preference.
An adult visual novel / strategy game hybrid, Koihime Muso: Doki Otome Darake no Sangokushi Engi (loosely translated as «Love Princess Unmatched —
Romance of the Three Kingdoms
Filled With Girls») released exclusively for Japanese audiences in January 2007 with two more installments following in later years, and a European PS2 port of the original
title; the franchise also received both an anime and manga series.