Guidelines for Interactive Web Experience:
1. Responsiveness Does it work? Does it only sometimes work? Does it work but somehow "feel" like it's not working?
2. Response Time How much delay? Compared to real-world stimulus-response feedback (usually no delay).
3. Functionality Does it do what it's supposed to do? Also, is what it's supposed to do what users want to do with it?
4. Start-up Time Does it make people wait before it starts? Because people don't want to wait.
5. Novel Is it new or different or a new take on a conventional approach?
6. Clear Is it clear or confusing?
7. Concise Are there extra unnecessary steps?
8. Reward Stimulus-response model. Is the food pellet worth the lever pull?
9. Intelligent Give your audience credit for being smart. Example->Super Mario games.
10. Levels of Complexity It can be useful to have multiple levels--one for cursory clickers and another for those who like to explore more in-depth.
11. Thinking in Terms of the Medium Is it trying to make the medium do something that it's not good at? How do people use the medium? Who uses the medium? Why?