Note: "Goodbye Eternity" is often searched alongside "Extra Life" because in many walkthrough communities, the game is known for its "Extra Life" mechanic or secret alternate ending. This guide covers the full game, all puzzles, the standard ending, and the secret "Extra Life" true ending.
Normally, you align three gears. Now, you have to align five gears while a timer counts down. goodbye eternity walkthrough aka extra life