I'll start with the game's orginator.
Kevin Bacon was in Sleepers with Brad Pitt
Brad Pitt was in Ocean's Eleven with Matt Damon
Matt Damon was in The Bourne Identity with Julia Stiles
Next: Brendan Fraser
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The sun is shining... but the ice is slippery.
Brendan Fraser was in Journey to the Center of the Earth with Josh Hutcherson.
Josh Hutcherson was in the Hunger Games with Jennifer Lawrence.
Jennifer Lawrence was in Silver Linings Playbook with Julia Stiles.
Next - Reese Witherspoon
Reese Witherspoon was in Cruel Intentions with Selma Blair and Sean Patrick Thomas.
Both, Selma Blair and Sean Patrick Thomas acted alongside Julia Stiles.
Selma in A Guy Thing and Down To You.. SPT in Save the Last Dance
Ryan Reynolds is next