Black Knife Simulator on Shadow Crystal Dev

Shadow Crystal Dev hosts DEVICE_KNIGHT, a browser recreation focused on Deltarune's Roaring Knight encounter rather than the full adventure. The fight features Kris, Susie, and Ralsei, with Normal, Practice, Hitless, Endless, and Single Attack modes. Before a run, players can tune the party's armor, weapons, and items; settings cover music, sound effects, graphics, and controls. The in-game Credits screen names Radi0 as the developer and credits Wander for bug fixing and playtesting. Radi0 describes the battle as the first entry in a wider series of browser boss recreations. Black Knife Simulator lets players revisit this single encounter, learn its attack patterns, or try a challenge mode.

Choose Normal for the main encounter, or pick Practice, Hitless, Endless, or Single Attack for a different way to approach the battle. Use Gear / Items to adjust the available armor, weapons, and items before you begin. The battle screen shows Kris, Susie, and Ralsei with their HP and party commands. Select an action, then watch the Roaring Knight's attack pattern and navigate the fight as it unfolds. The encounter follows an attack-by-attack recreation of the original patterns and timing. Use Settings to review music, sound effects, graphics, and controls. The mode list makes it easy to switch from the standard encounter to focused practice or a higher-pressure challenge.