The Nintendo DS version of Unleashed, Double Smash features gameplay akin to a side-scroller, similar to that of the Godzilla: Monster of Monsters. Although graphically 3D, its 2D gameplay made it similar to titles such as New Super Mario Bros. or Sonic Rush. Using the two-screen display of the Nintendo DS, flying monsters appear on the top screen, while grounded monsters appear on the bottom screen. A multi-player option allows for a different player to control each monster. Critical reaction to Double Smash was largely negative. IGN gave the game a score of 3 out of 10, saying: “None of the recent Godzilla games have been very good, but at least they were fun. Godzilla Unleashed: Double Smash cannot make this claim. It looks terrible, and reduces the King of the Monsters to a mush of no-texture polygons, then puts him in a tedious series of punching planes and kicking boats.” GameSpot gave Double Smash a 2 out of 10, calling it “one of the worst DS games ever made,” adding: “With a perfect storm of terrible game design, bad play mechanics, and uninspired destruction, this game does what oxidation bombs, volcanoes, and Matthew Broderick couldn’t: It kills Godzilla.” GameSpy gave the game a 1 out of 5, saying: “This brain-dead combat is perhaps the worst part of Double Smash. Slowly plodding through the stale levels, fighting the same enemies, and using the same techniques to win grows old almost immediately.”