Teenage Mutant Ninja Turtles III: The Manhattan Project is the NES-exclusive sequel to TMNT II from Konami. It refines the combat of its predecessor and adds death-blow attacks that can be used at zero health as a last resort desperation move.
The Turtles are enjoying their vacation on a beach in Florida.
"Com'on! April's report is just about to start."
"Here in New York, crime is escalating everyday."
"Gee... what happened!?"
"Bummer dudes, it's Shredder!!!"
"Turtles!! I'm taking April along with Manhattan Island!! If you want them back, come and get them."
Despite the box art, you don't actually fight any Triceratons in this game.
The final space station stage and music were re-used almost verbatim in Turtles in Time on SNES.
Manhattan Project is a solid follow-up to TMNT 2. Although it starts off on a bad foot with an ugly first stage and lame music, both the graphics and sound pick up a lot later on. The gameplay is more refined and the kamikaze death-blows are a great touch. Best of all, it's significantly longer and more challenging than its predecessor.