Play Boktai - The Sun Is In Your Hand (u)(eurasia) Online

Boktai: The Sun Is in Your Hand came out for the Game Boy Advance in 2003, developed and published by Konami. It arrived during a time when the handheld was full of inventive titles that tried new things with the hardware itself, and this game was a clear example of that ambition.

You control Django, a young Solar Boy, on a mission to hunt vampires and other creatures of the night. Your main goal is to explore areas screen by screen, delving into dungeons and using your solar weapon to purify the undead. The game's most defining feature is its physical sunlight sensor; you need to play in actual daylight to charge your weapon, making sunny days a direct resource. Combat is straightforward, involving timing your sword strikes and using a bow for distant enemies, but the constant need for solar energy dictates your pacing and strategy. The difficulty comes from managing your power reserves and navigating dark areas when the sun is low. It feels like a puzzle layered on top of an action game, where the weather outside becomes part of your planning.