The CRY file extension is associated with Cryptainer and used for its encrypted volume file format. Cryptainer is a freeware utility from Cypherix. It is a 128 bit disk encryption software that is a "miniature" version of Cryptainer PE and Cryptainer.
Map file used by games developed with CryENGINE, a first-person shooter game engine created by Crytek; stores a game level, including the terrain, buildings, mission objectives, spawn points, items, and other map objects; can be used for creating custom missions. Crytek has developed three versions of CryENGINE: CryENGINE 1, CryENGINE 2, and CryENGINE 3. These engines have been used for games such as Far Cry, Crysis, and Entropia Universe. The engines support both PC and console platforms. NOTE: CRY map files are created using Sandbox, a tool included with the CryENGINE software.