Solo Party: Delve Deeper - A Deeper Solo Game Experience Delivered Monthly

A deeper exploration into solo games every month

With the Solo Party: Delve Deeper subscription, we pick a longer, more immersive book or zine each month for those wanting a deeper solo exploration.

Delivered straight to your door, no scheduling required.

And each pack includes a special gift from the creator or publisher!

Oct 2026 Selections

Substratum Protocol Solo Bundle

When the interdimensional portal appeared at the Earth’s core, the Substratum Protocol was initiated...

Substratum Protocol Premium Zine

This 80+ page zine contains all the rules and content you need to uncover the apocalyptic mystery at the center of the earth. Play solo or with a group!

Substratum Protocol Expedition Journal Pack

This journal pack contains an Expedition Journal, Personnel Folio, and Team Folio to expand upon who you and your team members are. Document the clues, their location, and the context in which you find them.

How it Works

On the 15th of each month, we reveal next month's selections. Subscribe by the end of the month and get it first.

On the 1st, we start shipping packs to subscribers. Subscribe by the 14th to get that month's selections.

On the 15th, the cycle continues with the next reveal.

Continue the journey as long as you like, with easy skipping and cancelation.

Your first charge happens at signup. After that, you're billed on the 28th of every month for the following month's pack. Skip any month before the 28th and you won't be charged.

Prefer to pay once a year? Subscribe annually and save 10%, dropping your rate from $39.99/mo to $35.99/mo ($431.89 billed yearly).

Stay on the Surface

Need to test the waters before you go deeper?

Subscribe to our standard Solo Party service and start your journey!

Sit back and explore new solo games every month, build out your collection, and support indie creators with Solo Party by Tabletop Bookshelf!