First of all I have to tell you, that I'm... a little bit of obsessed with - seemingly irrelevant - details. And this game has lots of them. Dripping tubes, functional taps, detailed and rich audio environments, small objects (like cups, pens, books, paper notes, etc.) placed with way too much care... There is even a bicycle, that has a functional ring bell!
By the way I don't use premade assets - so every object and detail (except some sound effects, that I've recorded from various youtube videos) have to be created by me.
(An airplane, that flies over the city from time to time)
Another thing, what makes the work harder is, the game has a relatively huge scene. I mean... not AAA huge game world obviously, but it's very complex with an alley, office building, storage, fan system, parking garage, courtyard, apartment building, etc. - and they're all connected, there is no loading screen between of them.
(Creating this bicycle has been way too much time)
Last, but not least: the game is relatively text-heavy. It wouldn't be such a problem, if english were my native language - but it weren't. Unfortunately I have to do lots of google-ing for checking phrases and expressions. The game won't win any literature prize for its texts (obviously) - but I don't want to release the game with strange grammar errors.
Huh...
So, these are the main reasons, why the game is still under development. The demo version is almost done - but it still needs some polishing and lots of testing...
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