(Yes, I know it's been on XBLA for a while, but still. It's now available on PC.)
Sequence is a rhythm/role playing game developed by Iridium Studios, Essentially, you have to press th e arrow/wasd keys in time to the music in order to defend/defeat monsters and get to the big bads at the end of each floor. The story takes place over 7 of these floors, with a Big Bad at the end of each floor.
(Forgive me, this is the best video I could find.)
"Storyline"
Ky is your everyday college student, studying Computer Science and Robotics, when he wakes up inside a mysterious tower. He is told by a voice over the intercom that if he doesn't learn how to proceed, he will die. The Voice, who introduces herself as Naia, instructs Ky on the basics of battle inside the tower, and as Ky's Shepherd, guides him through the tower on his way to the top.
"Gameplay"
The core gameplay mechanics involve switching between three different "fields" in order to maintain the upper hand in battle/song. There's the Defense Field (Red), the Spell field (Green), and the Mana field (Blue, Pronounced Mah-na).
Arrows that fall into the Defense field need to be hit when they hit the bottom of the field, in time to the music. If you miss, you lose some HP. Pretty simple. If you miss an arrow in the middle of casting a spell, then you fail the cast, and the spell doesn't work. There is no punishment when you miss an arrow in the Mana field, however when you successfully hit an arrow, your Mana increases by one. You will need this as you deplete your Mana casting spells to heal/attack.
You cannot spend the entire time sticking in the Defense field; casting magic is the only way to deal damage to the various monsters that are in the tower, and although you can cast spells in any field, the arrows required to perform the spell will only scroll into the Spell field.
In order to proceed to the next level, you need to Synthesise a special item, know as a Key the (floor name here). Using the items you win by defeating monsters, you can synthesise various weapons, accessories, armor and scrolls, which are used to learn new spells.
There are four difficulty levels, from Easy through to Insane. This video showcases him playing on Normal difficulty, but there is a large step up from Normal the the Hard difficulty
Arrows that fall into the Defense field need to be hit when they hit the bottom of the field, in time to the music. If you miss, you lose some HP. Pretty simple. If you miss an arrow in the middle of casting a spell, then you fail the cast, and the spell doesn't work. There is no punishment when you miss an arrow in the Mana field, however when you successfully hit an arrow, your Mana increases by one. You will need this as you deplete your Mana casting spells to heal/attack.
You cannot spend the entire time sticking in the Defense field; casting magic is the only way to deal damage to the various monsters that are in the tower, and although you can cast spells in any field, the arrows required to perform the spell will only scroll into the Spell field.
In order to proceed to the next level, you need to Synthesise a special item, know as a Key the (floor name here). Using the items you win by defeating monsters, you can synthesise various weapons, accessories, armor and scrolls, which are used to learn new spells.
There are four difficulty levels, from Easy through to Insane. This video showcases him playing on Normal difficulty, but there is a large step up from Normal the the Hard difficulty
All in all, I've played it for around three hours at this point, it's pretty fun for a $5 game. You can currently download it from Steam.