A naive grid-lock would not quite be good enough for Factorio. Yes, there is a grid, but there's also a grid within that grid, if you mine a rock for instance t

A naive grid-lock would not quite be good enough for Factorio. Yes, there is a grid, but there's also a grid within that grid, if you mine a rock for instance there will be four pieces of rock lying within that one grid cell, and perhaps you want to pick up just one of them. Then there's combat which doesn't take place on the grid, sometimes you want to shoot a shell or a rocket between a few biters which don't neatly fit in any one cell, and they're moving quite quickly that you need a mouse pointer's freedom you shoot where you want. It's an interesting problem, I'm looking forward to how they approach the proper controller support later in the year. I suspect Keyboard + Mouse will always be the most comfortable way to play though.