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RenPy, also known as the Ren'Py Visual Novel Engine, is a free and open-source game engine which facilitates the creation of visual novels. Ren'Py is a portmanteau of ren'ai (恋愛), the Japanese word for 'romantic love', a common element of games made using Ren'Py; and Python, the programming language that Ren'Py runs on. The engine was developed for and targeted at multiple platforms, including Microsoft Windows and Linux.
来源:维基百科