Just posted the postmortem of Coffee Quest 2600. It is located at http://blazinggames.blogspot.ca/2014/03/coffee-quest-2600-postmortem.html . The game is my Coffee Quest game as it would have been like on the Atari 2600 keeping the hardware limitations of the system in mind. And boy does it have limitations.
What Went Right – emulating TIA playfield registers
Mixed Blessings – the map
What Went Wrong – Not able to write it for the 2600 (yet)