Advice on running a TSR-module campaign

My friends and I have been playing D&D for over 30 years together, but never used any of the TSR modules. We want to dive in and see what we missed, and I've an idea for a campaign set in an archipelago of islands with a very pulpy, Cthulhu-mythos undertone, using OSE and the following TSR modules in roughly this sequence:

• N4 Treasure Hunt
• B4 The Lost City (but set on an island, rather than a desert)
• X1 The Isle of Dread
• C1 The Hidden Shrine of Tamoachan
• I1 Dwellers of the Forbidden City
• S4 The Lost Caverns of Tsojcanth
• W4 The Forgotten Temple of Tharizdun

I'm also considering maybe adding in modules U1-3.

I'm wondering if this is a reasonable idea. I want to craft an overarching plot, and pepper in hints of later modules into the earlier ones so it feels like we're building up to something, particularly Tharizdun.

Is this a reasonable plan? Has anyone tried something like this before?

Posted Nov 7, 2025, 6:59 PM UTC

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