Sorry if I join the discussion so late
. I heard about these games in a PDF file of AE's manual for PC. I've got AE for PlayStation but there isn't that page in the manual, although it's original. I want to attach the page (it's Italian). All I know about these series is that Hand of Odd was the first game in the Habitales series. I also found some screenshots here
http://oddworld.dreamhost.com/oddwor...handofodd.php?. But this is just about Hand of Odd.