The Calamity Mod is one of the largest Teraria content mods ever. It features new biomes, new monsters, new gear, new music…new everything. Calamity completely changes the base game of Terraria without detracting too much from the core experience.

With the Calamity mod being such a robust update, even veteran players will need a primer before diving in. Beyond that, there are also reasons for downloading it at all, what it includes, and how to install it, as well.

8 How To Install The Calamity Mod

While mod support was added to Steam for Terraria at the end of March 2020, at the time of writing, the Calamity mod is loaded through the tModLoader. This bit of kit has been powering Terraria mods for years and is pretty streamlined and easy-to-use at this point.

Once you’ve installed tModLoader, you can head to the official Calamity Mod wiki to find the download links. It’s as easy as that. For a step-by-step process, TheGamer has a handy how-to for installing Terraria mods.

7 New Bosses In The Calamity Mod

There are a lot of new bosses in the Calamity mod, and we mean a lot. There are over a dozen mini-bosses, including an angry giant clam, five new pre-hard mode bosses, such as the Slime God, nine new hard mode bosses, including the terrifying Ravager, and eight new post-Moon Lord bosses.

Oh, and there’s a superboss, as well, known as the Supreme Calamitas. If you’ve finished Terraria and are looking for end-game content, Calamity is your mod. These bosses put even the hardest bosses in the base game to shame.

6 A New Class - The Rogue

The Calamity Mod also adds a whole new way to play Terraria in the form of the Rogue class. This class utilizes a new Stealth mechanic that has synergy with Rogue-specific armor sets and weapons. There are 159 weapons for Rogue. Yep. Seriously.

Stealth works like this: if a player stands still with no weapons out, their stealth meter increases. If you attack with one of the new Rogue weapons while in Stealth you deal extra damage. This class is incredibly fleshed-out for a mod. It feels like it was always meant to be in the game.

5 New Biomes In The Calamity Mod

Even though Terraria 1.4 added some new biomes to the base game, the Calamity mod goes a step further. There are five brand-new biomes introduced.

4 New Structures In The Calamity Mod

Alongside the new biomes, there are a few new structures that spawn during world generation. Take Evil Island as an example, this floating island made of the opposite of the world’s Evil biome (so Corruption or Crimson) will spawn with a locked Biome Chest. There’s also the Shrine, which is a small structure that spawns in each specific biome - these contain powerful items.

3 New Leveling Mechanic - Proficiency

This is one of the most interesting added features in the Calamity Mod. It basically introduces an entirely new way to scale the power of your character. Whenever your character uses a weapon, they will level up their Proficiency stat.

So, this works for Melee damage by increases overall damage, crit chance, and melee speed. It’s pretty similar for every other type of weapon damage, regardless of class. A player can also choose to purchase a Proficiency level-up from the Goblin Tinkerer. It really complements the overall feeling of progression in Terraria.

2 General New Mechanics In The Calamity Mod

There are a lot of overall mechanical changes in Calamity. There are new debuffs, different types of fishing, changes in the rarity of items, a death mode, and death prevention. To cover them all here would take several hours.

One of the most interesting changes is the way the new Buff and Debuff system works. Terraria was already pretty great at allowing players to really prepare for a fight, but the Calamity mod takes it to a whole new level. Like it does for most of the game, really.

1 New Town NPCs

Forget about the new Truffle NPC, the Calamity Mod is where it’s at for a busy village. There are four new NPCs introduced in the Calamity mod: the Archmage, the Bandit, the Drunk Princess, and the Sea King.

The Archmage, for example, is a Hardmode NPC that spawns once the Cryogen boss is defeated. This guy will help you out in your boss fights (he has some cool ice debuffs) and sell all sorts of items, like the Ice Star, Frostbite Blaster, and Absolute Zero sword.

You can find out more about the Calamity Mod here. This list is really just to introduce this awesome mod to new players, and give you a bit of information on what is a truly enormous mod.

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