Since I can tell that this group is gonna have a lot of threads and posts and with Tarb making so many blog posts, I am making this and sticking it so is will be easier to find the special posts that have significance rather then looking for them in the sea of threads that is sure to come.

Character Profiles
Kaiju Profiles: Godzilla Junior/Godzilla III
Amalgam'verse Equestrian OCs
Technology of the Amalgam'verse
Technology of the Amalgam'verse part 1: Project Ruby Dragon
Technology of the Amalgam'verse part deux: The Dragoons
Humanity's Stand
Chapter 14
Other
Discord Channel
MLP Fan Labor Wiki Page

Character Discussion Thread don't forget this

Canon One-shot: The Legend of the Demon Mercenary

Finally got that Oneshot done! Me and shane worked on it, and major props to tarbtano himself for the final review[along with some suggested edits to make the oddities in it less jarring]

Here's all of the side info I could find:

Timelines:

Godzilla Amalgam Universe Timeline

Godzilla Mirror Universe Timeline

Profiles

Godzilla Amalgam Universe:

Kaiju Roster in a Nutshell

Terran Defenders:
Godzilla Junior
Mothra Lea
Anguirus
Rodan

Mutations:
Xenilla/Spacegodzilla
Destroyah

Dark Hunters:
Monster X
Gigan
Irys/Albino Hyper Gyaos and Gyaos flock

Other:
Kaizer Ghidorah
Reijuu
Enjin
Raiga
Aliens

Equestria:

Moonbeam Glimmer
Mermares
Mermare Royals

Tales of the Amalgam'verse:

Time and Isolation:
Part 1
Part 2
Part 3

Extinction Hour

The Rise and Fall of C.C.I.

Godzilla meets Gorgo

Tyrant and Alpha Predator

Q&As

Q&A 3/27/2015
Anniversary Q&A Video
Common Amalgam'verse Questions
The Bridge Q/A #?

Extra Stuff

Mega Spoilers
Meet the Species: Anguirus
Mana and Terran Magic
Character Concept art and Original Plot
Thoughts on Nightmare Moon
Equestrian Power Levels
Equestria Headcanons

Alright, this isn't absolutely complete yet, but I think it's in a complete enough state to reveal to the public:

The Bridge: Master Reading List

As the doc says therein, the goal here is to collect all of the various writings related to The Bridge and assemble them all in one place, in a definitive reading order.