UK indie developer Introversion has revealed how Subversion's death led to Prison Architect's birth in an exclusive interview with Eurogamer ahead of its developer session at the PC and indie game show Rezzed.

It is the story of how Introversion creative chief Chris Delay took a 2010 holiday to the world's most famous prison and left convinced that Subversion had to be canned after four years in full development - and Prison Architect had to be the indie developer's next game.

Subversion was an ambitious hacking game that featured procedural city generation and complex AI simulations. But despite gathering a good deal of interest from gamers and press, Delay felt the gameplay never came together in the way he'd hoped and, ultimately, the core experience "sucked".