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    <title>Mojang Studios Jira</title>
    <link>https://bugs.mojang.com</link>
    <description>This file is an XML representation of an issue</description>
    <language>en</language>    <build-info>
        <version>9.12.2</version>
        <build-number>9120002</build-number>
        <build-date>10-01-2024</build-date>
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<item>
            <title>[MCPE-21022] Slimes not spawning in slime chunks</title>
                <link>https://bugs.mojang.com/browse/MCPE-21022</link>
                <project id="10200" key="MCPE">Minecraft (Bedrock codebase)</project>
                    <description>&lt;p&gt;In my survival world I have noticed that slimes do not spawn in slime chunks at any height (I have confirmed they are slime chunks using the reverse engineered algorithm by protolambda) I have tested this in creative and survival modes across multiple slime chunks and seeds &lt;br/&gt;
Note: they seem to spawn just fine in swamp biomes though&lt;/p&gt;

&lt;p&gt;I also submited this in the feedback section by accident (sorry about that) &lt;/p&gt;

&lt;p&gt;I am using a samsung galaxy tab a  &lt;/p&gt;</description>
            <key id="167420">MCPE-21022</key>
            <summary>Slimes not spawning in slime chunks</summary>
                <type id="1" iconUrl="https://bugs.mojang.com/secure/viewavatar?size=xsmall&amp;avatarId=18903&amp;avatarType=issuetype">Bug</type>
                                    <status id="5" iconUrl="https://bugs.mojang.com/images/icons/statuses/resolved.png" description="A resolution has been taken, and it is awaiting verification by reporter. From here issues are either reopened, or are closed.">Resolved</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="1">Fixed</resolution>
                                            <reporter username="RedstoneReactor">Matthew Pisano</reporter>
                        <labels>
                    </labels>
                <created>Fri, 7 Apr 2017 02:30:00 +0200</created>
                <updated>Tue, 16 Jan 2018 06:51:55 +0100</updated>
                            <resolved>Tue, 3 Oct 2017 18:41:43 +0200</resolved>
                                    <version>1.0.5.54</version>
                    <version>1.2.0.22</version>
                    <version>1.2.0.25</version>
                    <version>1.2.0.31</version>
                                    <fixVersion>1.2.1.1</fixVersion>
                                                        <votes>18</votes>
                                    <watches>11</watches>
                                                                            <comments>
                            <comment id="429061" author="ffulkerth" created="Tue, 16 Jan 2018 06:51:55 +0100"  >&lt;p&gt;Tony Baxter look at this (most likely related to your lack of slime issue)&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://bugs.mojang.com/browse/MCPE-21856&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;https://bugs.mojang.com/browse/MCPE-21856&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="429060" author="tonyb1024" created="Tue, 16 Jan 2018 06:16:44 +0100"  >&lt;p&gt;The comment on 29/Sep/17 states fixed. I am running on windows 10 and slimes have stopped spawning, or at least very rarely spawn. I even went back to an older world with a working slime farm (in slime chunk) that was gathering around 900 slimeballs (15+ stacks) an hour and now it gets nothing after waiting 1 hour. Using the latest version on windows store (1.2.7 on the splash screen)&lt;/p&gt;</comment>
                            <comment id="410635" author="mcgoldberger" created="Tue, 3 Oct 2017 18:07:41 +0200"  >&lt;p&gt;My starting map is mostly swamp no major waterways or oceans the only thing not spawning are slimes on any level of the map. I have searched the main map all over above and below ground changing the survival level from easy to hard, staying in one area for at least an hour. Then moving on to make sure they don&apos;t spawn before I placed this ticket. This occurs on both windows 10 and xbox one even though they are the same version I was testing to make sure of the glitch.&lt;/p&gt;</comment>
                            <comment id="409685" author="pneuma" created="Fri, 29 Sep 2017 00:57:35 +0200"  >&lt;p&gt;Fixed&lt;/p&gt;</comment>
                            <comment id="407458" author="thekapm" created="Wed, 20 Sep 2017 16:15:44 +0200"  >&lt;p&gt;I have also tested this in multiple settings. Prior to the Better Together update the slime would spawn regardless of light level. Now they only spawn when dark, and rarely at that. They are supposed to spawn in slime chunks regardless of light level, but this is not the case.&lt;/p&gt;</comment>
                            <comment id="407387" author="ffulkerth" created="Wed, 20 Sep 2017 00:48:48 +0200"  >&lt;p&gt;@r.takahashi - you are wrong.  Slimes in *slime chunks *spawn regardless of light level and WERE spawning fine a while back.&lt;/p&gt;

&lt;p&gt;Swamps: (this fits your comment)&lt;br/&gt;
In swamps, slimes may spawn at night between the heights of 50 and 70 provided the light level is 7 or less. They spawn most often on a full moon, and never on a new moon. Slimes only spawn in the normal swampland, not in its variant, the swampland M.&lt;/p&gt;

&lt;p&gt;More precisely, the game checks if the light level is equal to or less than a random integer (from 0 to 7), then if the fraction of the moon that is bright is greater than a random number (from 0 to 1). If these conditions are met and the altitude is acceptable, there is a 50% chance of spawning a slime.&lt;/p&gt;

&lt;p&gt;&quot;Slime chunks&quot;	(this does not)&lt;/p&gt;

&lt;p&gt;Slimes spawn throughout the world (except mushroom islands) below layer 40 regardless of light level, but only in certain chunks, 1 in 10 of all chunks. These &quot;slime chunks&quot; are determined pseudo-randomly by combining their chunk coordinates with the seed of the world:&lt;/p&gt;</comment>
                            <comment id="407215" author="pneuma" created="Mon, 18 Sep 2017 21:39:01 +0200"  >&lt;p&gt;PE&apos;s Slimes can&apos;t spawn, unless those locations are less than light level 8.&lt;/p&gt;</comment>
                            <comment id="406067" author="ffulkerth" created="Fri, 8 Sep 2017 18:50:18 +0200"  >&lt;p&gt;slimes arent spawning in slime chunks.  effects windows 10 and mcpe versions 1.2.0.31&lt;/p&gt;</comment>
                            <comment id="388680" author="morgwenna" created="Wed, 14 Jun 2017 11:44:32 +0200"  >&lt;p&gt;They used to spawn on Jack O&apos;Lanterns. That would explain the drop for me as I tend to light large areas with them in the floor... thanks.&lt;/p&gt;</comment>
                            <comment id="385426" author="depressed-pho" created="Tue, 30 May 2017 10:14:43 +0200"  >&lt;p&gt;While I have a working chunk-based slime farm in my world, it&apos;s true that slimes are spawning WAY rarer than expected. And there are two other oddities:&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;Slimes cannot spawn in a slime chunk if the spawn pad is exposed to the direct sunlight.&lt;/li&gt;
	&lt;li&gt;Slimes cannot spawn on Jack O&apos; Lanterns.&lt;/li&gt;
&lt;/ul&gt;
</comment>
                            <comment id="385315" author="redstonereactor" created="Mon, 29 May 2017 16:56:24 +0200"  >&lt;p&gt;New theory: slimes spawn somewhere over 32 blocks away from the player but still Despawn randomly at over 32 blocks (slimes only spawn if I get really far away but despawn if I go back) so you have to get really lucky to catch one before it despawns.  That is why they seem so rare. &lt;/p&gt;</comment>
                            <comment id="383571" author="redstonereactor" created="Wed, 17 May 2017 23:04:14 +0200"  >&lt;p&gt;Big news, a whole ONE slime spawned in version 1.0.8  guarantee you that I will never get another one.  At least I know that my slime chunks are actually slime chunks and that slimes spawning at a WAYNE lower rate than expexted.&lt;/p&gt;</comment>
                            <comment id="381501" author="timberstar" created="Fri, 5 May 2017 04:36:52 +0200"  >&lt;p&gt;I have the same problem but with hostile mobs. We built a mob grinder above water to limit mobs spawning below and ruining the grinder, only to realize that the mobs arent spawning at all even if we are 24 blocks away. They only seem to spawn if we are close by. We&apos;ve tried being close by the grinder but that didnt work either.&lt;/p&gt;</comment>
                            <comment id="381497" author="onehoop" created="Fri, 5 May 2017 03:56:13 +0200"  >&lt;p&gt;As I watch youtube/tv, I have cleared out more of the area (self-identified chunk) and I believe that a major issue for me has been that is that mobs do not spawn within 24 blocks of the player (except by spawners). I don&apos;t know why they don&apos;t spawn when I&apos;m in my base, but when I&apos;m at the bedrock level they spawned on the top two levels. &lt;br/&gt;
It might be possible for me to clear out an area between two chunks that would allow me to see spawns at both but it will be hard until I can get a beacon and the third wither skeletskull is slow in coming. (There&apos;s maybe 2 or 3 chunks between)&lt;br/&gt;
I think if this were my ticket then I would close it? It does seem to be Working As Intended. Slimes would be a lot easier in MCPE if we had a view that would show chunk borders and if we had a way of seeing our coordinates. I led one of the mini slimes back to my base and named it to keep it on my mind. I have about half a stack of slime blocks now...&lt;/p&gt;</comment>
                            <comment id="379717" author="redstonereactor" created="Mon, 24 Apr 2017 21:21:32 +0200"  >&lt;p&gt;The same thing has also happened to me after upgrading to 1.0.7 on one of my superlative worlds&lt;/p&gt;</comment>
                            <comment id="379714" author="onehoop" created="Mon, 24 Apr 2017 20:51:42 +0200"  >&lt;p&gt;Update: a couple of incidents of slime spawns in 2 of my 3 self-identified slime chunks yesterday using 1.0.7. Both were during the day (or early morning) and neither with a new moon. It seems that the rates are just MUCH lower than I would expect. &lt;br/&gt;
I found a previously unlit portion of the caving system that I was in and an adjacent cave system is huge. Possibly a WAI.&lt;br/&gt;
I did upgrade to iOS  10.3.1. I don&apos;t expect that it changed anything, but it is a recommended update. &lt;/p&gt;</comment>
                            <comment id="378280" author="onehoop" created="Sun, 16 Apr 2017 06:07:59 +0200"  >&lt;p&gt;I did have a night with slimes again in 1.0.6. It was not in a swamp biome and I was not in the same area (chunk) as where I had seen them before. It was daytime again before I could check the moon, but I think it was a new moon? When I got out and went back to the other cave system that is all lit up, nothing spawned where I saw the slimes before. &lt;br/&gt;
I got enough slime balls to do small projects with sticky pistons but not enough for anything involving multiple slime blocks. Incidentally the clock does show the moon phase (but you can only see it at night)&lt;/p&gt;</comment>
                            <comment id="378024" author="onehoop" created="Fri, 14 Apr 2017 22:39:50 +0200"  >&lt;p&gt;I had thought that maybe slimes were only spawning in slime chunks on new moons.  I had marked everywhere that I had found a slime with wool. Then, I cleared out the area between them. I was paying attention to the moon cycle from my wall clock and they did not spawn on the new moon either. In fact, I had no spawns since 1.0.5. I just upgraded to 1.0.6 so haven&apos;t tested it yet. &lt;/p&gt;</comment>
                            <comment id="376774" author="junglebear" created="Fri, 7 Apr 2017 22:40:19 +0200"  >&lt;p&gt;I was going to make a report about this as well! Youbeat me to it. Im on iOS by the way&lt;/p&gt;</comment>
                            <comment id="376753" author="redstonereactor" created="Fri, 7 Apr 2017 22:05:05 +0200"  >&lt;p&gt;Interesting, thank you for the confirmation.&lt;/p&gt;</comment>
                            <comment id="376726" author="morgwenna" created="Fri, 7 Apr 2017 19:08:12 +0200"  >&lt;p&gt;I too have noticed that slimes are not spawning except in very limited numbers in swamps. Not seen a very large one at all. I usually take out a huge area at level 11 in a swamp biome to almost guarantee slime spawns but nothing therefore thought I would check to see if anyone else is having and issue and here it is. I can confirm that slimes are not spawning in anything other than swamps above ground. iOS 10 latest version.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10102">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="173355">MCPE-22597</issuekey>
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            <issuelink>
            <issuekey id="182544">MCPE-27298</issuekey>
        </issuelink>
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            <issuekey id="177135">MCPE-23990</issuekey>
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