Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
Blitz3D - Create 2D and 3D Games for Windows.
Java - A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible
Monkey 2 - An easy to use, cross platform, games oriented programming language
Rust - A safe, concurrent, practical language
Phaser - Desktop and Mobile HTML5 game framework. A fast, free and fun open source framework for Canvas and WebGL powered browser games.