X-COM: UFO Defense (UFO: Enemy Unknown in the UK) was a fabulous strategy game. The recent reboot (X-COM: Enemy Unknown) is good, but it largely gutted my favourite strategic components, like base design, base defense, and R&D.

Rex Nebular and the Cosmic Gender Bender (http://www.gog.com/game/rex_nebular_and_the_cosmic_gender_bender) was such a surprisingly fun adventure game by Microprose. It came out when the Sierra adventure games basically owned PC gaming, and this was a fresh team's try at the genre. It's like a cross between Leisure Suit Larry and Space Quest.

When Rex is captured by the female overlords of a planet and briefed on his imprisonment:

Rex: Examination!? What examination? Intern: We need to determine if your genes are worthy to be mixed with ours. If so, you will serve as breeding stock. If not, you will serve as fertilizer. Rex: Breeding stock? That doesn't sound so bad. Intern: You would probably enjoy it. Then again, there may be some discomfort between the 600th and 800th times. Naturally, the second day is worse.