What is your favourite moddable game?

[Who]

Mine is Mount & Blade


Originally a military medieval sanbox game, has great modding capabilities.

Example:
The last days (Lord Of The Rings mod)



1866 (A Wild West Mod)



Star Wars: Conquest ( Star Wars mod, oviously)

[Qwertygiy]

inb4Minecraft

Seriously though, most people as far as I'm aware that play anything modded play Minecraft modded. It's the only thing I play that can be modded (if Roblox plugins don't count, which they shouldn't since Roblox is all about making stuff in Lua).

[Fat_Sacks]

Half Life 2.
There are at least 200 mods out there for Source, including TF2, Portal and all other Source games.

[Dignity]

Minecraft

This

[Glome]

Battlefield 1942.

[Who]

Battlefield 1942.

I still play Forgoten Hope from time to time