You can use a small patch to add the remaining power of call/cc to Lua. I've thought I would need to do this for a game, because I was using both "state stored

You can use a small patch to add the remaining power of call/cc to Lua. I've thought I would need to do this for a game, because I was using both "state stored in execution contexts" and "speculative execution of the game's update() function while waiting for remote players' inputs". I didn't end up making that game though :(