Press [Ctrl]+C when you are playing a mission, and you will
complete the mission in that second, with the same results
as the previous one!

Chris McIntosh

At the end of each month, just before your finance screen comes up, transfer all of your scientists to another base. (ie have two research bases) and you will save yourself MILLIONS to spend on better things when they come. This also applies to engineers but do not try with soldiers especially if they are in psionic training. Also sell all alien corpses but ONE of each kind.