Valve has released the Team Fortress 2 SDK, which means we can expect a load of new content from the modding community.

Valve releases TF2 SDK to the public for modders, allowing changes ranging from tweaks to complete conversions. Modders can ...
Business Insider

How to install the 'Among Us' proximity chat mod and make your games even more suspenseful

The "Among Us" proximity chat mod makes it so you can hear other players talking when they're near you in-game. To install the proximity chat mod, download it from GitHub and run it, then open "Among ...

Valve hands the Team Fortress 2 source code to modders

Valve is handing Team Fortress 2 modders the keys to the kingdom, as long as they don't try to make any money from it. The ...
Eurogamer

Team Fortress 2 mod reverts the game to 2008 - and it's coming to Steam

UPDATE 26/10/18: All good things must come to an end, but it seems TF2008's end came particularly quickly, as the mod's newly-approved Steam page has now been removed. According to an email screenshot ...