Looking at the game cards on the Franchise or Series page, would it be possible to color code the platform boxes to make it easier to see at a glance? The current 'checklist' and 'star' icon is really small and you need to look for it.
I'm suggesting something like color-coding the platform card's background, e.g. green for owned, blue for wishlisted, and keep it grey/white for the rest. If this would mess up the overall theme of the site, perhaps consider color-coding the 'owned' and 'wishlisted' icon themselves? Whatever it is, it would also be nice to have it implemented site-wide.