This vintage ad for the Atari 2600 shows how the ideas for games were dreamed up before there was a conceptual library of standard ideas to draw inspiration from: a man sitting in a room with a dizzy fly, creating a game out of surrealist idea association as he simultaneously stuffs wads of blotter LSD up his nostrils. "A fly! I'll have a mutant fly. There we are. You'll need some potential. Now an Ion Zone. Yar. Yar's Revenge."
There's a big part of me that doesn't want to admit that this isn't the way games are made.
Atari Commercial [YouTube]