Digital Games- But are they art?

Is it reasonable to consider computer games as art?

a) How does Adams define art? Do you agree with his definition?
Adams raises a few aspects to define art, they are its category, history, duration and its expressiveness.
1st - category, there are fine arts, decorative arts, pure arts etc, but Adams believes that there is grey area to classify the categories, for example, shall we define "design" as an art?
2nd - history, Adams thinks art should be representational of its era or century.
3rd - duration, Adams thinks an art should be long lasting, although the work had been created ages before,  we still find it aesthetically interesting.
4th - expressiveness, Adams believes a work of art should be expressive, it can tell artist's thought and message.  Art is a form of expression.
I agree with Adams' definition.
Yes, I think there is grey area in defining art too.  A lot of people may discuss whether design is art or not, because it seems not for art seek, it is for solving problem.  But I think there are still some aesthetic properties in design, for example, composition, colors and shape.
Leonardo da Vinci's Mona Lisa is a good example of durable artwork, although that is a work of 16th century, until now, art critics and artists still find it interesting and amazing.  I think it can demonstrate that a good artwork should be durable.  Besides, I think sometime, art is subjective, artists usually want to express their opinions through their artworks.  I think if the artist can inject his emotion and thought into his works, it is definitely an enrichment and it can be an infectious work.  How the artist presents his/her thought and opinion is an art form as well.

b) According to Adams, what is needed for videogames to be considered as art?
1. Content - videogames should have content or message to express.
2. Innovative - videogames could not be boring, it should be innovative which makes people feel challenging, so the creators should be willing to take risk.
3. Critics - videogames need critics to criticize its aesthetics properties, an artwork should be criticized by art critics.