Survival maps are usually about managing to survive with limited resources. They are essentially a custom experience of the survival mode in vanilla Minecraft. They often have certain objectives to complete as well.
This is a Skyblock Survival Map which contain 20+ different biome of glass bottle, try to finish all the achievement that the map creator 'Cactusflipz' have giving you, and have fun while doing all these achievements.
Getting bored of normal sky island maps? Want something new that allows you to go farther then in normal sky block maps? Well sky labs is right for you. Over 15 different challenges and a shop that allows you to get almost ever item in the game! There are also challenges that of fun for friends for you guys to play! I am definite you will have a blast playing this!