I like giant robots. I like them a whole, whole lot, actually. But let’s be honest here: their titanic clashes are nothing without heaping helpings of human intrigue. They need us and our elaborate, hilariously political squabbles as much as we need their impossibly large arsenals and devil-may-care approach to dealing with skyscrapers. Back in the day, single-player was the perfect middle ground between those exceedingly admirable goals. Now, though – as Piranha president Russ Bullock explained during GDC Online – things are a bit more complicated. Not to mention more expensive. A lot more expensive.