Last Friday we went code-complete. That means, no touching the code except to fix something. We had spent the past 2 weeks in the final QA process -- fixing bugs, typos, grammar, optimizing performance, and adding usability features. We had also used that time to continue improving the AI here and there along with tweaking the campaign missions, game mechanics, etc. So over the weekend we went through the really hard tests. That is, making it as solid as it can possibly be. Running it on the absolute worst systems we could find. Trying to crash it. Having it run on its own (forced turn mode) to see if it would crash.