Listed as one of Debrah Farentino's credits.
A 'Eureka' poster is revealed in the One-Season-Later scene
The character Douglas Fargo is from Eureka.
Einstein-Rosen bridge as a "wormhole"
Mentioned in reference to Hugo Miller.
Fargo's game has items like the Dagger of Josefina (referencing deputy Josefina Lupo) and having to save Leena from the Carter Curse (referencing Sheriff Jack Carter).
Myka's card plays "Workin' at the Carwash". This is probably a nod to this show's sister series "Eureka" where "Carwash" is a running gag throughout all five seasons.
Eureka is mentioned
Series is discussed.
Felicia Day is introduced as being from the show