Is Torque 3D Modding Friendly.

#1 Replacing art assets is one of the easiest things in Torque, many of them you can even replace while the engine is running and the changes get updated live in-game.

#2 Wow that was fast. Art assets was my main concern. The last thing would be maps. The map can be saved using xml but how would the terrain work with that? Would maps even need to be saved using something like xml or would they also be easily replaceable? Sorry if this is beginners questions but I googled for a few hours and could not find anything.

Edit : I know some engines such as cry engine 3 bundles everything into packages and the game loads everything using them. These packets can also be brought back to cry engine 3 and edited. This is extremely useful for modders.

Reading this it seems like Torque 3D does what I need it to do. I can save terrain into files and load them up at runtime. Thanks
http://docs.garagegames.com/torque-3d/reference/classTerrainBlock.html

#3 Torque3D is very similar to CryEngine.
And the terrain is also an object in your level file but the terrain mesh itself gets saved in a .ter file.
You better just try it out. Placing and replacing some assets in a level is not that hard.

#4 Torque3D is quite modding friendly. The core scripting language easily allows you to override behaviour using "packages". This allows you to optionally extend core behaviour. Objects are also fairly extendable from script.

You can also easily package up assets into zip files making distribution easy.

#5 You can even have server sided mods where you can modify the game without having to distribute files to the client.