To mitigate the effects of review bombing, Valve announced Friday it has a built a tool that would identify and alert the moderation team of any game with “anomalous review activity.” After a case of review bombing is confirmed, the reviews submitted under this time period would then be removed from the review score calculation. Gamers can opt out of this change, however, and “off-topic review bombs” will remain on the site for anyone curious enough to read them. Once our team has identified that the anomalous activity is an off-topic review bomb, we'll mark the time period it encompasses and notify the developer. The reviews within that time period will then be removed from the Review Score calculation. As before, the reviews themselves are left untouched - if you want to dig into them to see if they're relevant to you, you'll still be able to do so. To help you do that, we've made it clear when you're looking at a store page where we've removed some reviews by default, and we've further improved the UI around anomalous review periods.