gemini slotAre you intrued? If so, read on for our Gemini Gems slot review. Theme, graphics & soundtrack. Where do the gems we see in many an on slot come from? Gemini Gems gives us a clue,Gemini is a 5-reel, 243- on slot game with instant play, autoplay, video slots, wild symbol, mobile gaming, diamonds and jewels themes you can play at 1 on casino.