How to download and setup swengine
Open terminal and run command
                                            git clone https://github.com/never-light/swengine.git
                                        
                                        git clone is used to create a copy or clone of swengine 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 swengine https://github.com/never-light/swengine/archive/master.zip
Or simply clone swengine with SSH
                                            [email protected]:never-light/swengine.git                                    
                                    If you have some problems with swengine
You may open issue on swengine support forum (system) here: https://github.com/never-light/swengine/issuesSimilar to swengine repositories
Here you may see swengine alternatives and analogs
libgdx aframe spritejs matter-js openage tinyrenderer appleseed yii2-render-many cocos2d-x CRYENGINE Babylon.js arcan boardgame.io tangram imgui pixijs bgfx Texture rendertron webglstudio.js mapnik asm-dom rust-doom react-tv gg herebedragons Glitter phenomenon ScriptableRenderPipeline Nidium