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Mods (short for modifications) are anything that changes Minecraft's game content from what it originally was.
Most mods add content to the game to alter gameplay, change the creative feel, or give the player more options in how they interact with the Minecraft world. Most people who mod Minecraft (known as modders) use Minecraft Coder Pack and either ModLoader or Minecraft Forge to do so. Some mods may be bigger expansions, others add more settings and options to optimize speed, graphics, or gameplay of the game. Server mods or plugins mainly give server admins more options and ease of use, and most mods for single-player have a server version that allows or optimizes the mod in multiplayer.
Ideally, the creator of a mod updates the mod whenever the game updates - bringing more content, bug fixes, or optimizations. Otherwise, the mod may not work with a newer version.
Mods are also available for the Pocket Edition via jailbreaking on iOS and through apps such as "BlockLauncher" on Android devices. Mods are not available for the Console Versions.
Types of mods
Client mods are modifications to your game files themselves. They are not custom clients, and they require modification of minecraft.jar.
As the Minecraft server software will ignore custom content from client side, most of the client mods which add new content to the game do not work in SMP unless a modification has also been installed on the server. Some authors of client mods have made server versions of their mods available, and others have not. A few of the Loader/API type client mods (e.g. ModLoader and AudioMod) and many of the functional client mods (e.g. Optifine, Rei's Minimap and TooManyItems) have effect in SMP straight away, without any modification on server side.
Server mods are modifications to the official Minecraft server software. They are commonly designed to make administration of servers easier by implementing tiered privileges for commands (such as kicking, banning etc.). They are frequently implemented as "wrappers" which do not actually modify the main server .jar file, instead monitoring its output and sending commands to it.
All-in-one server mod with great stability and lots of features.
Successor of Canary Classic, a fork of hMod
A popular mod API with its own server software. It is not available at this time due to a DMCA request by one of the developers.
A popular server software based on Bukkit.
|MC Port Central||
Modified Server combining forge with Bukkit allowing you to play mods and bukkit plugins on the same server.
|Build #18||Ported Mods for 1.4.6||1.7.2|
Mod packs are collections of mods that have been put together and configured so that they will all work together. Mod packs are often centered around a general theme like tech, quests, or magic. Mod packs often have either custom launchers or installers that make installing and running the mod pack easy. Some of the more popular mod packs are Feed The Beast, Tekkit and Hexxit.
If you install a mod, it may stop the game from working properly. If you encounter a problem while using mods and want to report it, first remove all of your mods and see if the problem still happens. If the problem continues to happen, it can be reported on the bug tracker. Otherwise, try to reproduce the problem with the fewest possible number of mods, and then report the problem to the author(s) of those mods.
If Minecraft crashes, a modified game is flagged in the crash report. The following link explains how to obtain a crash report. (Note: If your Minecraft has never crashed, following those instructions won't find anything.)
The crash report text will include a line near the top which will say one of:
Is Modded: Probably not. Jar signature remains and client brand is untouched Is Modded: Very likely Is Modded: Definitely: client brand changed to (present loader, such as "fml,forge" or modloader)
A shortened example crash report is given below:
Minecraft has crashed! ---------------------- Minecraft has stopped running because it encountered a problem; Unexpected error --- BEGIN ERROR REPORT 1aa09c6 -------- Generated 03/09/12 12:00 - Minecraft Version: 12w34a - Operating System: Windows 7 (amd64) version 5.2 - Java Version: 1.7.0_03, Oracle Corporation - Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation - Memory: 500000000 bytes (500 MB) / 600000000 bytes (600 MB) up to 900000000 bytes (900 MB) - LWJGL: 2.4.2 - OpenGL: NVidia ABC 999 Ti/PCI/SSE2 GL version 0.9.0, NVIDIA Corporation - Is Modded: Probably not. Jar signature remains and client brand is untouched - Type: Client - Profiler Position: N/A (disabled) - World MpServer Entities: 1 total; [anx['Blockbuilder567'/1135, l='MpServer', x=8.50, y=66.62, z=8.50]] ...
The code that checks for mods is fairly simple, and it's not always correct; it may say 'probably not' even with mods installed. However, it's very difficult to get the 'very likely' message if you haven't modified minecraft.jar somehow, so that's essentially a 'yes'. There's also a 'definitely' message, seen when a Bukkit server crashes and under other similar circumstances, like when the Minecraft Forge API is installed.
'Probably not' appears when the client/server brand appears to the in-game check to be unaltered (often termed 'vanilla') and the META-INF folder is still there. 'Very likely' appears when the META-INF folder is not present but the client/server brand seems to be vanilla. 'Definitely' plus the client name appears when the client is not vanilla. For example, you might see something like:
Is Modded: Definitely: Client brand changed to 'fml,forge'
- Plugin API, an upcoming feature that allows modders to more easily add content to the game.
- Cheating and exploits.
- Mods/Installing mods for a guide on how to install mods.
- Mods/Installing forge mods for a guide on how to install mods using Forge.
- Mods/Creating mods for a guide on how to create mods.
- Programs and editors/Modding showcases tools for installing and making mods.