Curious on site info

[Shad]

Is there a chart like that available? Thanks.

There are currently two ways to skin this cat.

The easiest is to simply view the game in question's Library page. Taking Secret Weapons as the classic example, the Expansion Game Requirements & Playability table will show you exactly which games are required, how many scenarios they are used in, and give you a recommendation for which game to purchase next in order to maximize your playability.

However, this automatic chart does not allow speculation. For that we must turn to Dean_P's playability spreadsheet which has its own thread here.

That gives you very granular control over your purchasing possibilities. I have PM'd Dean to drop by this thread and comment.