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The Re4 knife trick is trending again after a fresh clip and discussion on speedrunning forums. This attention spotlights older PS2 tricks that still surprise players.
Resident Evil 4: Krauser Knife Glitch That Breaks the Game is a PS2 bug where the knife locks inputs and crashes the menu screen. Also called knife lock or broken menu state, it corrupts memory during specific item swaps. Studies indicate these memory writes can freeze the console entirely.
Sometimes the bug appears in seconds, other times it hides through careful play. Generally, rapid equip and cancel motions right at the inventory screen trigger it. For one run, this tiny timing flaw stops the game from continuing, turning a simple cutscene skip into a full crash.
One frame of input at the wrong moment is enough to break everything. Treat the menu like fragile glass and avoid spamming equip during tense scenarios.
Can you trigger this on purpose?
Some runners do, but most avoid it to stay safe.
Is this fixed in remakes?
Modern ports run differently, so this exact bug is unlikely.
