The Gems of War is rife with misinformation, and few guides on how to play the game that are newer than a year old even exist.
Drastic swaths of the game, from hero classes to the UI, have drastically changed, to the point where the game is unrecognizable.
The Gems of War wiki linked at the top of the forums is so disgustingly out of date that it has become actively harmful with its misinformation, and even the resources in the /r/GemsOfWar subreddit sidebar are from versions of the game as old as January 2016.
Gamepedia is a relatively new platform, created by Curse (who currently also run Twitch) that allows developers to work with content creators to create official wikis for their games. It is used by popular games such as Minecraft and Dota 2 to create hubs for video game resources with high production value.
Such a page currently does not exist for Gems of War, and creating one requires direct contact with Curse from the developers, but once it is established, the community would certainly be willing to help support, moderate, and maintain it as a valuable resource to new players. I’d definitely be willing to write several pages!
New players are lost without these resources, I see confused players here all the time asking basic questions that an official wiki could easily help answer. I know the developers occasionally read these, and it’s important that they try to make this partnership, because I can’t create a new resource like this on my own.