For 28 years, North American owners of Saturn sidescrolling platformer Clockwork Knight 2 have had an entire extra game on their discs and never knew it.
That changed on Christmas Eve last month when Bo Bayles found a cheat code to unlock the first Clockwork Knight game in Clockwork Knight 2.
At CK2's title screen, pressing up, down, left, up, left, down, right, up, L, R, L, R causes jingle to sound. After pressing the start button, a green "Part 1" box is seen that normally isn't there in the U.S. version.

Bo Bayles posted a video to X, formerly Twitter, showing off the code being input.
Well known for digging through the game code for secrets in other Saturn titles like Burning Rangers and Nights into Dreams, Bo Bayles discussed on his blog how he found Clockwork Knight 2's cheat code in the first place. First he identified which memory addresses were storing controller inputs, then looked for spots in the game's code using those memory addresses. That led him to finding a section that looks for a particular string of inputs β the cheat code that unlocks Clockwork Knight 1.
For those with an optical drive emulator, an Action Replay cartridge or some other way of playing patched games, Bo Bayles uploaded to SegaXtreme an Xdelta patch that enables CK1 in CK2 without needing to input a code at all.
