Invasion Mod gives you the ability to initiate an attack on the location of your choosing. The difficulty steadily ramps up and the mobs are designed to deal with base defenses. The behaviour of all invading mobs has been extensively revamped. Most mobs have new abilities and in this beta stage there are some new mobs and substantially more powerful mobs on the way, geared towards new roles.
Features:
- Spawn an invasion until a nexus is overwhelmed(most reliable way to test your base and no down time).
- Leave mobs to spawn around a nexus every couple nights if you want to go off and do other things.
- Set mobs to instead spawn randomly at night, like usual mobs but a potentially lot more of them(customisable).
- Items available, like rechargeable traps, to help defend.
Note: the nexus acts as a beacon and GUI for invasions(that’s why it’s there), but mobs spawning at night don’t yet have any way of organising themselves around a player or central point.
The area you set up at will certainly take a bit of a beating (a large beating if you are very stubborn and last a long time), but there is no “massive destruction” or silly unfair mechanics that will randomly destroy all your work. This includes the nexus(it does not damage any blocks). Still, you can back up your map if you want.
Mod Guide:
The Nexus and How to Use It
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Invasion Mode
Activated by inserting a regular Nexus Catalyst. Once tapped into a rift to this degree, disengaging is extremely unsafe – it cannot be deactivated! In fact, the block will become unbreakable during this state, though it can be damaged.
You get flux, but the other side of this is that mobs will begin to spawn a certain distance away, attracted to the nexus. Mobs will attack players and, given the chance, the nexus itself. If the nexus ever reaches 0%, the activation is broken and the invasion ends in a nasty way to all living things in the area, so be warned!(to clarify, it doesn’t damage any blocks, just living things, and remains afterwards) A nexus is pretty tough though, and its damage state is highly visible.
Continuous Mode
Activated by inserting a Stable Catalyst, the nexus generates flux much more slowly. Mobs sometimes can attack at night, so be prepared. You can tell by sunset whether the nexus will be attacked that night or not. Over time, the nexus gradually charges up. This results in faster flux generation but attacks by mobs become much stronger. Failing to keep the nexus safe will inevitably cause a partial discharge as the mobs overwhelm it, but successful defenses will allow the nexus to reach higher and higher power levels. The discharge in this state is not enough to harm the player, though. You can control the nexus in this state to some degree with damping agents, including shutting it down if needed, but it’s not instant.
To defend the nexus in continuous mode, you must deal with the mobs who have destabilised the rift and forced their way into the world. Killing enough of them to restabilise the rift will let the nexus safely draw more energy and help you secure the area.
In the case of exiting and reloading the game (given minecraft was able to save), both SMP and SP nexuses should be restored to the state you left it in. You can also adjust the nexus range to suit your base. The range is roughly the area the nexus influences and the range at which mobs will spawn. By default it is 60 blocks outward. In SMP an op can adjust it by using ‘/invasion range [x]‘ as a command. In SP, for the moment, you can place 2-8 dirt blocks in the nexus to change the range to between 32-128. Don’t worry, the range is very visible on the nexus interface.
Here’s a quick overview of the nexus interface. A catalyst in the left slot will begin to activate the the nexus, progress being the red bar. This nexus is already active and “locked in”. The slot on the right is where rift flux is generated, along with its progress bar too. Wave number is the current intensity of the attack while nexus level is the the furthest wave this nexus has ever reached. It also tracks the total number of mobs’ demise since it was placed.
Making a nexus involves taking an obsidian block as a base and crafting it with three redstone and a phase crystal.
Nexus

To make the important phase crystal needed, you will need one diamond and some redstone. Don’t worry, a nexus is good at generating resources back.
Phase Crystal

Night Spawns
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To enable this, find ‘invasion_config.txt’ in your minecraft folder after running the mod once. You should open it in notepad and you can simply change values and save. For example, change enable-night-spawns from ‘false’ to ‘true’.
-Mob spawn chance. This is the overall rate of custom mobs spawning.
-Maximum number of mobs existing at once. Minecraft’s default is 70 but you can override this.
-Sight range. This is how far they can see you, in number of blocks.
-Sense range. Similarly, this is how far away they can feel your presence and know you’re there.
-Maximum group size. This up to how many mobs might spawn together in one spot.
-Maximum number of mobs existing at once. Minecraft’s default is 70 but you can override this.
-Sight range. This is how far they can see you, in number of blocks.
-Sense range. Similarly, this is how far away they can feel your presence and know you’re there.
-Maximum group size. This up to how many mobs might spawn together in one spot.
With spawn types unchanged, various types of zombies and spiders spawn in place of their basic counterparts. You can change this though, adding any other type of invasion mob and how often they spawn – for example ALL skeletons with some pig engineers. This is easy to set up in the config file.
Items
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Mobs
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Block Strength
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Config
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Installation:
This mod’s primary install route is with Minecraft Forge now. You will need a version of Forge installed for your current minecraft version. You don’t need ModLoader or ModLoaderMp. The old instructions for old Invasion versions are in another section if you need those instead.
Client & Server
Remember to backup your important worlds regularly. If you need help locating your minecraft.jar and minecraft install folder
Requirement 1: Minecraft Forge. Download the recommended build of Forge for your minecraft version (stable version for 1.4.5 isn’t out as I write this, but there are beta versions). Install this by extracting it into your minecraft.jar and overwriting (copy the files over).
Client-Only: Delete meta-inf. This is a special step for only the client. Find your minecraft.jar and delete the META-INF folder inside it.
All you need to do is put the downloaded Invasion .zip file in the ‘mods’ folder in your minecraft directory for the client, or whatever folder you are running the server from. Now you’re done! If the folder isn’t there, either create it or just run Minecraft once.
Note: There are some commands to help out. An op can use the command ‘/invasion end’ to turn off a nexus if it’s needed. You also can change the nexus range for larger bases with the command ‘/invasion range [x]‘ where x is between 32 and 128. This is number of blocks in distance from the nexus that spawn points will be looked for.
For 1.5.2
For 1.5.1
For 1.4.7/1.4.6
For 1.4.5







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