Turtles Forever is a wildly entertaining animated adventure that brings together two generations of Teenage Mutant Ninja Turtles in a mind-bending, action-packed romp. The movie's central premise, which sees the Turtles from the 2003 animated series meeting their counterparts from the 1987 series, is a fan's dream come true. The film's writers cleverly exploit this crossover potential, using the fish-out-of-water scenario to comment on the differences between the two franchises while also celebrating their shared spirit. The result is a movie that is both a loving tribute to the Turtles' rich history and a forward-thinking, visually stunning thrill ride.

The animation in Turtles Forever is a major highlight, blending the sleek, computer-generated look of the 2003 series with the more traditional, hand-drawn aesthetic of the 1987 show. The action sequences are fast-paced and inventive, with the Turtles facing off against a variety of formidable foes from across the multiverse. The voice acting is also top-notch, with the cast from the 2003 series delivering strong performances and the 1987 Turtles providing a fun, nostalgic counterpoint. The movie's script is full of clever references and in-jokes that will delight long-time fans of the franchise, but may sail over the heads of younger viewers.

Despite its many strengths, Turtles Forever is not without its flaws. The movie's plot is somewhat predictable, and the villain's motivations are not fully fleshed out. Additionally, some viewers may find the constant shifting between different dimensions and timelines to be confusing or overwhelming. However, these are minor quibbles in what is otherwise a highly enjoyable film. Overall, Turtles Forever is a must-see for fans of the Teenage Mutant Ninja Turtles, and a fun, family-friendly adventure that is sure to delight viewers of all ages. With its positive message about teamwork and cooperation, its thrilling action sequences, and its heartfelt tribute to the Turtles' enduring legacy, Turtles Forever is a shell of a good time that is not to be missed.