'Squid Game' features a bizarre cameo in its series finale. Here's what it means for the franchise's future.

"Squid Game" season three wraps up Seong Gi-hun's (Lee Jung-jae) story.

No Ju-han / Netflix

• The "Squid Game" season three finale has an emotional ending for its main characters.
• A cameo from a major celebrity hints that another season or show may be in the works.
• Here's how the show ends and what we know about the show's future.

Warning: spoilers ahead for "Squid Game" season three.

"Squid Game" season three has an explosive, tear-jerking ending that wraps up Seong Gi-hun's story...