ToME: the Tales of Maj'Eyal

math.randomseed(os.time())

Should probably be included in the base code of the T-Engine every time it starts, otherwise you have to manually add it to each module so you don't get the same random numbers every start up.

No, you do not want to use math.random at all.
Use the rng.* functions, they are correctly inited and use a mersene twister which makes much better random numbers than the default OS rand()

There are a few calls to math.random from the thirdparty modules, anything in there that is sensitive to non-randomness?

True .. I'll include the init just in case

Still for your own code use rng.*

perhaps it would be better to say here is a list of rng.* functions you can use, rather than say use them... as some people may not know all of them... and it is easier to find the math.* stuff because it is written down online.

That reminds me, is there any way to include documentation of the C functions exposed to Lua with the LuaDoc generated documentation?