libgdx
                                Desktop/Android/HTML5/iOS Java game development framework
                            
                        How to download and setup libgdx
Open terminal and run command
                                            git clone https://github.com/libgdx/libgdx.git
                                        
                                        git clone is used to create a copy or clone of libgdx repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with libgdx https://github.com/libgdx/libgdx/archive/master.zip
Or simply clone libgdx with SSH
                                            [email protected]:libgdx/libgdx.git                                    
                                    If you have some problems with libgdx
You may open issue on libgdx support forum (system) here: https://github.com/libgdx/libgdx/issuesSimilar to libgdx repositories
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