Twins starts with an overblown fairy-tale quality that seems as if it should work. But, by the finish, the movie collapses on the shoulders of the stars. It works because they both showed up and delivered the goods and kept their end of the deal. [9 Dec 1988, p.1]
Jay CarrBoston Globe
The attempts to supply heart are never more than synthetic, but Schwarzenegger, as the good guy with the good genes, and his goofy sweetness lift Twins into the win column. [9 Dec 1988, p.33]
Peter StackSan Francisco Chronicle
For a big, floppy, silly movie that is in many ways the epitome of throwaway entertainment, Twins has its charms. Arnold Schwarzenegger and Danny DeVito make it seem they had so much fun making this flabby comedy that the fun becomes infectious.
Rick GroenThe Globe and Mail (Toronto)
Shtick is what Twins is all about, but there's good shtick and bad shtick, and there's enough good shtick in Twins, the majority of it involving Arnold Schwarzenegger's exposure to modern U.S. mores, to keep the momentum going. [10 Dec 1988, p.C3]
Mike ClarkUSA Today
Like it or not (it's hard to dislike), it's less a movie than a concept searching for one. [9 Dec 1988, p.6D]
There is a genuine sweetness in Reitman's work that balances the innate cruelty of much '80s film comedy. But this time the gags are too feeble to provide a counterweight and the film tips into the cute, benign and pointless. [9 Dec 1988, p.A]
The humour, when it comes, is on a par with Reitman's Ghosbusters, but the film feels, rather than the solid comedy it is, like a massive missed opportunity.
Vincent CanbyThe New York Times
In Twins, which is supposed to be funny, the former Mr. Universe and pint-sized Danny DeVito play twins, the result of a genetic experiment that went awry. To the extent that Twins is carried by anybody, it is carried by Mr. DeVito. Mr. Schwarzenegger is dead weight. [9 Dec 1988, p.C18]