Gearsystem
                                Sega Master System / Game Gear / SG-1000 emulator for iOS, macOS, Raspberry Pi, Windows, Linux, BSD and RetroArch.
                            
                        How to download and setup Gearsystem
Open terminal and run command
                                            git clone https://github.com/drhelius/Gearsystem.git
                                        
                                        git clone is used to create a copy or clone of Gearsystem 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 Gearsystem https://github.com/drhelius/Gearsystem/archive/master.zip
Or simply clone Gearsystem with SSH
                                            [email protected]:drhelius/Gearsystem.git                                    
                                    If you have some problems with Gearsystem
You may open issue on Gearsystem support forum (system) here: https://github.com/drhelius/Gearsystem/issuesSimilar to Gearsystem repositories
Here you may see Gearsystem alternatives and analogs
core raspberry-pi-os gpiozero gogs netdata openFrameworks qt openauto pi-hole rpi-appliance-monitor pi-web-agent glslViewer iot-433mhz Home-Monitoring-Raspberry-Pi-Node flash cuberite johnny-five gobot cylon blynk-library blynk-server PJON audio-reactive-led-strip mycroft-core grafana-on-raspberry hunter Home-AssistantConfig BerryNet periph image-builder-rpi