CryTek notwithstanding, [Tamas] can also use games with Lua scripting that have a real sandbox. DOTA2 has a leaky sandbox and can be used to call OS I/O routines and execute base 64 encoded ...

Unknown Worlds, the developer behind Natural Selection 2 (the good game about aliens fighting marines), have done a nice and are giving away their LUA IDE, Decoda, for free in an open source form ...