Kroz is a series of Roguelike video games created by Scott Miller for IBM PC compatibles.

[2] The object of the game is to survive numerous levels of attacking monsters and ultimately find the priceless Magical Amulet of Kroz.

Some levels are generated randomly; these tend to be rather chaotic, and essentially consist of a mad dash through waves of attacking enemies to pick up valuable objects and/or escape to the stairway.

Scott Miller tried to create a game that had some of the elements of Rogue, but with less randomness and more reliance on the abilities of the player than on luck.

[6][7] At the same time, Miller, looking for other avenues to distribute his games, turned to the shareware model.

[8][10] This shareware version of Kingdom of Kroz was the first game to bear the name of Miller's one-man company, Apogee Software Productions.

[10] The game proved successful, with checks sent to Miller amounting to roughly US$80,000–US$100,000 and him receiving between US$100 and US$500 every single day.

[4][5][3] The Kroz concept, including the text mode implementation, was cloned by Potomac Computer Systems for the ZZT games, which also used the same shareware business model.