GemBoy! Pro - GBC Emulator will provide you the wonderful experience of the classic game top the 1990s. This is no ads version.1. To active option menu: press or hold the menu key on the navigation bar (Back, Home, Menu).2. A GBC game file (ROM file) is necessary to play a game. You can find GBC game files by searching the web3. This application supports GBC file and ZIP file (compressed GBC file).4. A 7z file is not supported.5. Support save and load state, screenshot, In-between press AB, shortcut keys, etc.