You can download it in Spanish or English ( some of the English translation is a bit off)
I haven't completed the game myself but it does have some good gameplay - you can ask the maker questions at rpgmaker.net and he is fairly good at getting back to you
I've quoted his description from rpgmaker.net. Hope you enjoy it.

A novice in times of Inquisition questions his morals when he finds out the church will condemn his sister for heresy. A strange man shows him the door to a world where he will be able to find all the answers he seeks and save his beloved sister. Based on the metal opera of the same name.
Trailer: http://www.youtube.com/watch?v=Es-2k745e1A
Here are the full features of the game:
-Classic (RTP) look
-High quality visuals
-Enthralling plot faithful to the opera
-Comedy and adventure
-Optional quests
-Dynamic alignment and character class system
-Secret missions, maps, quests, enemies and items
-New Game Plus
-RTA (Real Time Action) Battle System based on the d20 system
-Combination of two or more spells to make more powerful spells
-Ability to learn skills from enemies
-Overdrive/limit break skills unique for each character
-GUTS system to avoid sudden deaths in an epic way
-Intelligent enemies
-Oversoul system for enemies
-Animations
-Zoom control
-Caterpillar system
-Reflective surfaces
-Graphic notifications
-Cutscenes
-Minigames and puzzles
-Global volume control
-Double weapons
-Items divided and sorted according to usability
-Items that multiply experience and money obtained in combat
-Alchemy system to create custom weapons, armors, potions and compounds
Note: Playtesting is not perfect. I'd appreciate if you find any errors or glitches so I can fix them.