The three final installments in the Wizardry series are now available on Steam thanks to an update for modern systems by Night Dive Studios, the folks responsible for the recent rerelease of System Shock 2 on Steam. They offer Wizardry 6: Bane of the Cosmic Forge and Wizardry 7: Crusaders of the Dark Savant as a bundle alongside Wizardry 8 and a bundle of all three games. They offer a Wizardry 8 trailer showing off the remake, and here's a refresher on the games:

Wizardry VI: Bane of the Cosmic Forge ($4.99): http://store.steampowered.com/app/245410
Take with you six companions - choose wisely, for having chosen, your fate is in their hands. Enter the ancient castle to retrieve the Cosmic Forge, a magical pen whose writings caused the river of time itself to change course. You will find treasure, armor, and magic items to advance your quest; meet wizened and cryptic dwellers who hold secrets that must be unearthed; and solve the riddles and puzzles that abound.

Wizardry VII: Crusaders of the Dark Savant ($4.99) http://store.steampowered.com/app/245430
You'll discover both friends and foes as you search for the once forgotten secret of a - the secret of the very universe itself. And you won't be alone in your search. Others as enterprising as you have also entered this dimension. Only your actions - both past and present - will determine just how well you fare. From the depths of a dungeon to the blue and limitless skies, you'll see it all.

Wizardry 8 ($9.99): http://store.steampowered.com/app/245450
Prepare to experience the culmination of a prestigious RPG series. Enter a vast world of intrigue and wonder. Unravel a gripping, non-linear storyline. Battle your way to victory using your swords, your magic, and your wits. Compete with rivals or align with allies as you struggle to ascend to the Cosmic Circle. Take the battle to the dreaded Dark Savant in Wizardry 8, the phenomenal conclusion to the Dark Savant trilogy, one of the most extensive and challenging stories ever told in classic role-playing games!