can mobs spawn on ice?
147519
Mobs can spawn on packed ice. This can allow for compact mob farms that rely on the tendency of pushed mobs to slide off the ice in some way. Packed ice is a completely solid block, and allows placement of any objects on top. Unlike normal ice, packed ice does not melt if placed near light sources.
1060021
You do not need to put torches up there. Passive mobs spawn on grass only (at least in grassy areas...), aggressive mobs spawn on cube-blocks only. No steps, no slabs etc.
1039636
Keep your home area well lit. Mobs only spawn if the light level is below 7; remember that a torch provides level 14 light and this decreases by one for every block away from the torch. ... Another way to keep mobs out of your house is a staircase that has an overhang.
484152
can mobs spawn on farmland? They can't; farmland is partially transparent, and mobs need to spawn on an opaque (solid) block. ... according to this test, mobs can spawn on observers! but the observer has dust on it, so mobs can't spawn there...
662173
Mobs subject to despawning In most cases, a mob will despawn immediately if there are no players within a distance of 128 blocks. If it's not within 32 blocks of a player for more than 30 seconds, there's a 1⁄800 chance each game tick it will despawn (2.47% chance per second).
801245
Slimes only can spawn in a swamp if the swamp is between Y-levels 50 and 70. In addition, slimes will also only spawn if the light level is at most 7. ... In addition, slimes follow all normal mob spawning rules. They will only spawn if you are within 16 to 144 blocks from a "valid" area.
793923
Mobs that are named using the name tag also never despawn in the world, similar to tamed mobs. The exceptions are wandering traders or if the mob is hostile and the difficulty is switched to "Peaceful".
233451
Mobs require a light level of 7 or less to spawn. This means that mobs can't spawn within 7 of a lit torch. So placing a torch every thirteen tiles will keep a hallway lit. ... Torches provide a light of 14, with the light value being reduced by 1 for every tile away.
514271
["Spawn near eight villages and a double spawner. -1712219374. Sometimes you just don't want to feel lonely, and this seed fixes that problem right up. ... ", 'Spawn right next to a cave with diamonds. 671954723. ... ', 'Spawn near a lot of unique biomes and big villages. -1278732637. ... ', 'Spawn near a taiga with a village. -198441644.']
581569
In earlier versions of update 1.9, there was a rare chance of the igloo spawning underground. This happens more often in snow hills or mountain biomes.
1154623
Villages generate naturally in plains, savanna, taiga, snowy tundra, and desert biomes. ... Villagers spawn only in houses that have beds, while job site buildings (with no beds) always generate without villagers.
1211648
Mobs will never spawn on slabs. That pigman did not spawn on that slab. Mobs will spawn on most opaque blocks (in addition to upside-down slabs and stairs) as long as the rest of their spawning conditions are met.
1186751
They spawn just west of the Ob or over Cragg's Island. You can farm this spawn area by flying up the channel that goes east to west to The Footpaw (land and take a beat here to regain stam and give the Quetz time to respawn) and then back to the Ob. Check Cragg's to the south and then the spot just west of the Ob.
1282795
2 Answers. Mobs don't spawn on glass, ice, half-slabs, and stairs. Your loft should be safe as per the minecraft wiki. Spiders can climb glass walls, so you may want to add a small overhang or a row of ladders if there's an entrance.
561311
4 Answers. Make sure you're not on peaceful mode - this can be selected in the options. Hostile mobs will not spawn in peaceful mode. ... You can reset the spawns in your world by switching to peaceful mode to remove all mobs, and then switching back up to normal/hard to make them spawn again.
1059002
Monsters can spawn on obsidian if it's dark enough, but it isn't any more likely than any other block. I'm 99% sure that the book you read isn't official. Blocks don't attract mobs. It is true that obsidian doesn't attract mobs, but the general statement that blocks don't attract mobs is not completely true.
359161
Mobs won't spawn closer than 24 blocks. They won't move around when farther than 32 blocks. Those are the only rules you need to know for a grinder that relies on mobs walking around.