Story time: So a few years ago, after playing Portal and loving it, and after making my iOS word game Wordchemy, I was kind of in a game-design zone. I brainstormed a ton of ideas: from memory games, to arcade-style games, to physics-based puzzle games, and many more. One idea, however, stuck with me. The basic idea was this: what if you could go backwards in time? Not as in traditional time travel, where you appear in the past, but actually backwards? Everything else would seem to be moving in reverse: things would fall up, people would be walking backwards, and you might even see your (relative) past self undoing your actions!
I ended up never making most of those games, but that time-travel idea stuck. I started designing levels for it, and actually started to build it once, but I never got it to a playable state. But every once and a while, I’d start thinking about it again. I decided that one of these days I was going to make it.