The idea isn't really the thing though is it? The basic idea is the product being worked on in Douglas Coupland's Microserfs released in 1995 (Blockland launch

The idea isn't really the thing though is it? The basic idea is the product being worked on in Douglas Coupland's Microserfs released in 1995 (Blockland launched 2004, Minecraft 2011). As you say, it's the design and execution.