💎Who will control Sapphire City, the jewel of all Lunar colonies? Last one standing takes the city! 💎 Beware! There has been a life support failure, and oxygen is running out! Carbon Dioxide, which is heavier than air, is filling up the city from the bottom up - can you achieve victory before your last breath?! Lunar gravity means big jumps & air time. Multiple levels in the city require your strategic movements during battle. Custom loot chests means cool space weapons and even jetpacks! 🚀