I'm here on behalf of the 20XX Discord mod team. We have been in discussion with the developer of 20XX, Chris King, regarding migrating the current wiki to Gamepedia. Myself and two of the other mods from the Discord would like to request administrative permissions for this wiki as we begin our overhaul of it. If you would like to verify the authenticity of my claims, you can reach me at the Official Discord and look for Zero#7711 among the users. You can also reach 20XX's developer via the Discord as ck#1963.
You can also reach the developer directly through his email (chris [AT] batterystaplegames.com) or twitter, and he can confirm the legitimacy of my claims.