A prototype object-oriented natural-language programming system for computer/video games is described, in which sentences written in object-oriented English is automatically converted to a functional, executable game code in Javascript. In addition, new attributive words are automatically learned while converting the text to code. Any syntactic or semantic errors are reported during the compilation to help users to debug and fine-tune the game. With less than 20 plain English sentences, up to 1800 lines of game code can be generated.