Critique of 'Get the glass' online games

Positives:

1. High quality graphics
2. Good music
3. Getting the game started is easy
4. Board game style play is easy to follow
5. My kids found the game quite fun to play 

Negatives:

1. Some puzzles are quite difficult and frustrating
2. Can take a long time to load iof you have a slow interenet connection
3. Limited scenarios and puzzles can get boring
4. Controls on driving game are slow to react
5. Some puzzles don't give enough information on what you have to do to win