DrOswald said:
Scores are a good thing. But the scoring system needs to be simple. For example, 1 = anything not worth playing, 2 = half decent, 3 = good, 4 = great, 5 = amazing. This is important for reasons:
1. I don't care to read 2 pages of writing to find out the game is bad. My time is more valuable than that.
2. I may not want my experiences of a game colored by the opinions of the reviewers. What I want sometimes is a context free assessment, which makes the most sense as a score.
3. It helps me understand a reviewer quickly: what type of games do they like, where do we agree and disagree? I can't read dozens of reviews to gain context, I don't have that sort of time, but I can look over their past reviews and get a good idea of how we are aligned. I can even pick out notable reviews (perhaps a place where we disagree) to take a closer look.
4. It helps compare reviews more easily. When I want to buy a game I typically find 3 reviews for it: a pro review, a con review, and a middling review. This helps get a much more complete picture of the quality of the game and the reasons why it is good or bad and helps me to more accurately predict what I will think of it.
The problem with a scoring system is that it doesn't express why it's good/bad. Aspects of the game that you might enjoy, might be bits that drive me up the wall personally. And thus, your scoring system doesn't really accurately reflect the quality of the game in any way that can be translated well to others. That's why I prefer an actual discussion about it. Describe the various aspects of the game, tell me why you like/dislike them, and give examples of why it's bad/good. This way, I can more accurately assess your score in relation to my own rating system. Just saying "the gameplay is good" doesn't really inform me about it. But if you say something like "The gameplay is very engaging, because it's a tense blend of stealth and bursts of frenetic combat, wrapped up in this very well built control system." That gives me way more data on whether or not it's a game for me. I can then say "meh, I hate sneaker games, I'll pass" or "OOH! I love being the Shadow that Flaps in the Night! Sign me up for this game!"
All that being said though, it's still a matter of personal taste and opinion, which can vary a great deal. I find reviews to be a helpful first filtering layer when it comes to choosing a game, but not the final decision on the matter at all.