I played castlevania lord of shadows lately, and I found it interesting to learn the story behind the creation of the titans. I though that it could be interesting to make a board game about it.
Yesterday, I had a flash idea where I combined the idea of a titan with the idea to make a duel masters like card game (which would not be collectible). I thought that it would be much more interesting than using the classic summon monsters theme and it would also make sense. Here is the basic idea:
Each player is a titan which is composed of smaller creatures attached to the Titan. Each creature is represented on a card which can be used in different ways:
Armor: When the titan takes damage, cards are discarded from the deck. If the deck runs empty, the titan is destroyed. Creatures might have an armor value making them soak more damage when discarded.
Power: Like in duel masters, creatures can be sacrificed to supply mana that will be used for other things. So you'll have a power zone where every creature placed there generates 1 mane until the end of the turn.
Spells: each creature has a spell effect. If the creature is placed into the spell zone, the titan is allowed to use that spell ability if he can pay the appropriate mana to use it. So spells are reusable.
Creature: Each creature can be detached from the titan to be placed into play. Once in play, they can attack other creatures or attack the enemy titan.
With the model above, it make sens that losing HP make you lose creatures from your deck. Spells and mana would represent using creatures to channel them into your titan.
As for the theme, I was thinking to use a Chinese elemental model for the creature's sphere of magic:
Water= Ice creatures
Earth= Stone Creatures
Wood= Plant creatures
Metal= Technological creatures
Fire= Energy Creatures
What do you think?