The hidden mode, known as "Eternal Mode", allowed players to create their own characters and engage in a never-ending battle royale. As players progressed through Eternal Mode, they'd unlock new characters, stages, and even storylines.
As they celebrated their victory, they received a private message from an unknown sender:
As the game's popularity grew, so did the rumors. Some claimed to have encountered glitches that allowed them to see into Mugen's true identity. Others reported experiencing strange visions and hearing eerie whispers while playing.
"Congratulations, NoScope. You've proven yourself worthy. Meet me at the old warehouse at midnight. Come alone."