This is one of the best IF games I've played in awhile. Well-written with great NPC conversations and well thought out characters. All of the babies have different personalities and attitudes which you must get to know in order to solve the puzzles. The game isn't difficult, mainly because all of the puzzles are actually logical and rely on things you learn as the baby learns. Great humor throughout. (Spoiler - click to show)It's also well worth a 2nd playthrough with the Commentary track on.
I also wrote a Walkthrough for it at: http://www.placesandpredators.com/tads/ChildsPlayWalkthrough.txt