What should reviewers almost always do when writing a review

There are many things reviewers should do when writing a review. First of all they should read the piece that they're reviewing completely and closely, making sure that they understand it in full before they form their opinions. Secondly, they should form a strong opinion and thesis about the work overall. This will help guide the tone and organization of their review.

Make sure that they are being accurate and fair, as well as looking for spelling mistakes or unneeded text.

answer; correction;

the major difference between the two is the objective and the reward of the game. candy crush has a puzzle theme with the objective of meeting a specific quota of points or objects, you are able to gain access to the next level and compete with peers on the process. on duolingo the objective is rather different, you are given sets of questions for you to answer for you to move to the next level and as for the reward, you are able to learn available language as this is an app developed to teach the user about other languages.