I'd have felt bad for Total War if developers The Creative Assembly had chosen to celebrate the series' fifteenth birthday with only five seconds of Total Warhammer. Poor, lonely, unloved Total War. But wait! Those pranksters threw a dummy party, saving the real festivities for this weekend.
A Total War weekend on Steam brings 75% off the price tag of most games in the series, Steam releases for the original Medieval and Shogun games, and trial weekends offering the full versions of seven Total Wars. Chin up, Twary: they still love you.
More's on sale than that page lets on, mind. Total War DLC on sale too, as are more games, as you can peep in this listing. You can pick up a lump of Total War in the Master Collection or even more in the Grandmaster Collection too, though even that is missing a few games.
Ye olde Medieval: Total War - Gold Edition and Shogun: Total War - Gold Edition have finally arrived on Steam, and are not in either bundle. You'll find them over here and here, costing £6.99 apiece and each coming with their expansion pack.
As for those trial weekends I mentioned, you have until 9pm UK time on Sunday to play the full versions of Total War: Attila, Total War: Rome II - Emperor Edition, Total War: Shotgun 2, Total War: Shogun 2 - Fall of the Samurai, Napoleon: Total War, Empire: Total War, and Medieval II: Total War. If you like 'em, the discounts continue until Monday.
If you're reading this at work right now and have left your PC on, do remember that you can start installation remotely through the Steam website. It might give you something to look forward to at the end of the day, beyond whatever cheap spirits you didn't drink on Thursday night.