For posterity’s sake, I wanted to note hear that my entry, Loss of Signal, was essentially a test of the above hypothesis. All letters in that game must be sent within specific predetermined windows, and failure to do so results in in-game mechanical shifts. Therefore the game is not necessarily derailed by temporary forgetfulness or a dip in interest. It provides its own opportunities to pick the story up again. Have I actually tested it? Heavens no. But I look forward to finding out if it works.