Produced by Hideo Kojima (of Metal Gear fame) and released by Konami in 2003, Boktai: The Sun Is in Your Hand is a clever little action game that uses actual sunlight (as detected by a sensor on the game cartridge) to charge up a solar weapon, to be used against undead and vampires in the game.
Boktai takes an overhead isometric view of the action, and the gameplay is a fairly simple mix of blasting and collecting, but it is all done so stylishly that The Sun Is in Your Hand is definitely a cut above most other action adventures like it.
This first game also spawned two sequels.
Boktai on The King of Grabs:
Boktai: The Sun Is In Your Hand
Boktai 2: Solar Boy Django
Boktai 3: Sabata’s Counterattack
More: Boktai: The Sun Is In Your Hand on Wikipedia
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