isometric game engine

Hi, We want a 2.5 isometric game prefably in html5 but flash is acceptable. First entrance: Computer customer comes ask an question, user selects 2~4 answers, another question after total of N questions grade wiil be granted. Questions can be chained according to answer. Payment will be based on completedness. After each game ends Example scenario: 1st Question: Customer comes and asks price variation of shirt. a) Price change according to quality, sir (Answer value:-5, Next:9th question) b) Let us check cloth types from labels (Answer value:5, Next:0: means end of interaction, ) c) Let me call Henry who nows better (Answer value:1, Next:0: means end of interaction, ) 9th Question: What is your definition of quality? a) Quality is price, what you get is what you paid (Answer value:-5, Next:0: means end of interaction, ) b) Quality, expecting something to work as expected. (Answer value:0, Next:0: means end of interaction, ) Customer/Question profiles will be provided (in json format). UserId, Customer and scores should be returned to server ( in json format) Please identify technology and framework, if possible isometric games.