Parallel drainage pattern. A parallel drainage system is a pattern of rivers caused by steep slopes with some relief. Because of the steep slopes, the streams are swift and straight, with very few tributaries, and all flow in the same direction.
1 In Creative, the player can use spawn eggs to spawn most mobs. 2  When mobs are spawned this way, all normal spawning requirements, such as light level and block type, are ignored. 3  Any entity can be spawned using the /summon command.
In vanilla minecraft mobs don't spawn if the light level of the block is 9 or above. However, I often don't want to fully lit all my structures. I might want a courtyard or a cellar that isn't fully lit.Also controllable light systems with redstone are a lot of fun to make, but I can never turn the lights off in fear of spawning mobs. might want a courtyard or a cellar that isn't fully lit. Also controllable light systems with redstone are a lot of fun to make, but I can never turn the lights off in fear of spawning mobs.