Multiple Collections Using Index Template + Multi-Word Primary Tag Syntax

Wondering if it’s possible to use the index template for more than just the default home collection? Also wondering what the syntax is for primary_tag that has more than one word. Example:

collections:
/:
permalink: /{slug}/
template: index
/game-reviews/:
permalink: /game-reviews/{slug}/
template: index
filter: primary_tag:Game Reviews

Yes, you can use the index template for multiple collections.

For filtering you should use the tag slug not the tag name, in most cases that’s the lower case hyphenated version of the name, but you can check it or even change it in your Admin > Tags, opening the specific tag.

In your case that’s likely game-reviews, so this should work:

  /game-reviews/:
    permalink: /game-reviews/{slug}/
    template: index
    filter: primary_tag:game-reviews