Duke Nukem: Manhattan Project is a platform game developed by Sunstorm Interactive, produced by 3D Realms, and published by Arush Entertainment. It was released on Microsoft Windows on May 14, 2002, in North America and on June 14, 2002, in Europe. A port of the game would be released for the Xbox 360 on June 23, 2010, by 3D Realms directly, followed by an iOS port on January 9, 2014. Setting Manhattan Project features the humorously musclebound action hero Duke Nukem, this time fighting Mech Morphix, a mad scientist who is using a radioactive slime dubbed G.L.O.P.P. (Gluon Liquid Omega-Phased Plasma) to metamorphose creatures into deadly monsters in order to take over Manhattan island, New York City. These enemies include metamorphic alligators, giant cockroaches, and even the Pig cops from Duke Nukem 3D. Duke also faces a few enemies who are not mutants, such as Fem-Mechs, lethal whip-wielding gynoids. Levels in the game contain recognizable parts of New York City. Gameplay Duke Nukem: Manhattan Project was built using a 3D engine known as Prism3D. The levels and characters are fully three-dimensional, and both the camera and Duke can move along any axis, but movement is restricted to a two dimensional plane. Utilizing the 3D engine, the player can zoom in and out focusing either on the enemy approaching or an overall view of the field. Duke can crouch, run, jump and slide kick underneath small counter space. The game is organized in 8 chapters, each one having 3 parts. In each part, the player must rescue a "babe" strapped to a GLOPP bomb and find a coloured keycard to unlock the way to the next part. At some parts, the player gets to use a jetpack to fly over large voids or hazardous ground. The controls are also quite easy to get used to, with buttons only for jumping, moving, firing, and weapon changing. Using a cheat, player can also move the camera to any angle and take screenshots. The game CD includes a level editor named "PrismEd", but level-creation activity for the game never reached popularity among the players, and only a tiny level editing community is currently active. Manhattan Project is not a direct sequel to any earlier Duke game. Manhattan Project is much like the original Duke Nukem due to its many similarities, such as 'Mech Morphix' looking and acting very similar (e.g. half a metal face