Quoting: Obscillesk
Thats a pretty cool method actually, I'd never considered that before, I think that'd work out pretty well.
I know of a few games that use such a method (well, a bit more advanced, but my post seems to sum up the major aspects of determining when somebody can do something), the best of which is mangband, a version of angband. i heard rumors about other games like it that are being developed now (i heard that maybe JADE, the 2nd version of ADOM, will have a multiplayer option).
and outside of the RL genre, think about games like the early ultima series.. they used a similar system, except it is not multiplayer. come to think of it, real time roguelikes would resemble ultima a lot actually 0.o