Voice controls wouldn't work with Ensemble RTS Halo Wars, EndWar boss Michael de Plater has told VG247, as it's too complex a game.
"I don't even know that voice command would even be a very good solution for that style of game because the complexity of what you have to do is so much higher, and it's not even such a natural thing," he said, speaking at a recent EndWar event in London.
"It's hard to see how it would work... It's very hard to map that more intuitive idea onto a more traditional RTS, I think."
Halo Wars and EndWar are too far apart from control systems to marry, said the exec.
"I think Halo Wars is a very, very different game to [EndWar], and the difference between Halo Wars and EndWar isn't so much about the voice command rather than the game itself.
"We're a tactical war game with no resource management and no base-building: they're much closer to a traditional RTS, which is a combination of building and fighting and resource management."
Halo Wars is out at the beginning of next year. EndWar hits on November 7 for 360 and PS3.