|Teenage Mutant Ninja Turtles|
|"The Manhattan Project"|
|Season 2, Episode 39–40|
|Original air date:|| March 2, 2014 (online)|
March 14, 2014 (TV premiere)
|Written by:|| Brandon Auman|
|Directed by:|| Michael Chang|
|Guest(s):|| Cam Clarke as '80s Leonardo|
Townsend Coleman as '80s Michelangelo
Barry Gordon as '80s Donatello
|← Previous||Next →|
|"Of Rats and Men"||"Mazes & Mutants"|
- This episode shares its title with that of the third Teenage Mutant Ninja Turtles video game for the Nintendo Entertainment System.
- In one of the dimensional portals, the Turtles, April, and Casey see their counterparts from the first Teenage Mutant Ninja Turtles animated series, produced by Fred Wolf Studios, and the closing scene shows that the Kraathatrogon ended up in the world of that series. In addition, the Turtles of that universe are voiced by their original voice actors from that series, though the credits mistakenly list Barry Gordon as '80s Michelangelo and Townsend Coleman as '80s Donatello.
Home video releases
- Teenage Mutant Ninja Turtles: Showdown in Dimension X