Black Castle - Retro Action Platformer

Play the original Black Castle Game Boy homebrew offline, plus a short local castle challenge.

Black Castle brings User0x7f's original Game Boy action platformer to a focused Chrome toolbar popup. Enter a fortress ruled by a black warlock. Fight through four complete levels, uncover secret passages and hidden items, learn the strengths of four weapons, and defeat the boss waiting at the end of each stage. Original mode is selected by default and preserves the existing Game Boy game's graphics, levels, enemies, weapons, secrets, boss fights, controls, and presentation. Castle Run is a separate secondary HTML5 challenge for a shorter practice session. Features: - Original Black Castle Game Boy game as the default experience - Four complete action-platforming levels - Four weapons with different strengths and tradeoffs - Secret passages, hidden items, enemies, and stage bosses - Separate local Castle Run HTML5 mini mode - Built-in Guide with verified keyboard controls - Session-only Favorite and working Share actions - Works offline after installation - No account, ads, analytics, tracking, remote code, or Chrome permissions Controls: click the game screen and press Enter to start. Use Arrow keys or WASD to move, Z/J for Game Boy A and jump, X/K for Game Boy B and attack, Enter for Start or Pause, and Shift for Select. Black Castle is the work of User0x7f. This unofficial extension is not affiliated with User0x7f, Nintendo, Google, or PastPlay.