Beating these games does not mean just getting various good endings, but also in some cases bad endings, as the goal is to unlock all of the bonus content. This makes getting the same ending twice and not unlocking any new content the way to lose such games. For example, "Gals Panic" is a variant of the classic game "Qix" where the objective is to uncover 75% or more of a picture of a girl. "Money Idol Exchanger" is a puzzle game comparable to the "Magical Drop" series (which is also categorized as a "bishōjo" game). In some cases, images of girls are used as prizes for skilled play, as is the case in strip Mahjong. In other games, the "bishōjo" aspect can be integrated more tightly into the game: in most dating sims, the objective is to select the correct conversation lines while speaking with a female character to increase their "love meter". This type of game resembles role-playing or adventure games. Many are very linear and are essentially interactive romance novels for men (sometimes called "visual novels").