[The Tweaker]

In Spain percentile-based games were quite popular years ago and several games were locally published, though only one of them remains in print nowadays:

- Aquelarre. The first professionally-published Spanish rpg, back in 1990, by Joc Internacional. Created by Ricard Ibañez, who would later design the Capitán Alatriste rpg, it was (and is, as a third edition is planned) a very gritty game set in the Spanish middle ages (13-14th centuries), during the Reconquista period. Quite deadly combat system. Magic and spells were taken from real grimoires of the time and Spanish, Arab and Jew folklore provide all supernatural creatures and monsters in the book.

Second edition was known for featuring terrible cartoony art which did not fit at all with the setting, but it is very complete and had all the background material (including several essays on medieval theology!) and info that you might need for years of playing with only the main rulebook (and maybe a good history book). It also included the background and rules changes necessary for playing in 17th century Spain as an alternate setting, previously published as a separate suppliment.

- Far West. A Western-themed rpg published by M+D Editores in 1994. Simple but fun. It used just three attributes (STR, DEX & CON) and percentile skills. Enough background information for having a good time gun-slinging and bank robbin' in the American Frontier.

- Superheroes, Inc. Out of print superhero game which also used percentile skills, published in 1994 by Ediciones Cronópolis. The rules were a greatly expanded and pulished version of those used in their generic rpg, Universo (see below).

- Universo (1993). Simple generic rpg, also published by Ediciones Cronópolis. Quite weak as far as rules go, and both the layout and the illustrations of the core manual were simply ugly.