Naples Guide: The Diplomatic Playground With an Economic Trap

Naples shows up on two different lists for two different reasons: it’s the game’s official beginner recommendation for learning diplomacy, and it’s the example a frustrated player reached for when describing repeated first-decade bankruptcies on r/EU5. Both are true, and they’re not actually in tension — they’re describing two separate systems.

Where you start

Naples begins as a Catholic kingdom of Neapolitan culture, ruled in 1337 by King Robert the Wise, with two vassals: Albania and Achaea. The population (2.263 million) is overwhelmingly Neapolitan (79%) and Sicilian (11%) by culture, 96% Catholic. Naples is one of only two nations in the game that can form the Kingdom of Jerusalem without being a Military Order — a long-term flavor goal worth knowing about even if it’s not a first-campaign priority.

The diplomatic case (why it’s recommended)

This site’s own beginner nations research already makes the case in full: Naples starts as one of the strongest Mediterranean powers, with a clear ladder — build galleys, rival and absorb Sicily, form the Two Sicilies, then look toward Florence and Milan. The vassal cluster (Albania, Achaea, plus assorted small Greek and Balkan holdings) is a live, low-risk diplomacy sandbox: annex the ones worth taking directly and let the rest consolidate on their own. Real rivals Aragon and Tunis both start weaker than you, and the Ottomans stay someone else’s problem for roughly a century. None of that has changed; it’s the reason Naples is the game’s own Politics-track tutorial pick.

The economic case (why people still go broke)

Here’s the part the tutorial framing doesn’t warn you about. A detailed r/EU5 thread captures the failure mode precisely: a player reported multiple Naples campaigns each ending in bankruptcy within the first decade, despite aggressive investment — marketplaces, RGOs, processing buildings, “covered my provinces in infrastructure.” The community’s diagnosis is consistent and specific, and it maps directly onto the mechanics covered on our economy and control guides:

You don’t earn from buildings and RGOs directly. They generate wealth in a location; that wealth is divided among the local estates; you then tax the estates. If your control in that location is low, the estates simply pocket what you can’t collect — and spend it entrenching themselves rather than enriching you.

Control gates everything, including RGO income. Several replies converge on the same formula: taxable income is a function of wealth and control together — a rich, high-development province with poor control can still run at a loss, because the cost of holding it (via low-control penalties across your sliders) doesn’t care how much wealth is theoretically there.

The fix is sequencing, not spending more. The community’s converging advice: build roads and RGOs closest to your capital first, where control is naturally highest; keep every discretionary slider (diplomatic spending, stability past what you need, fort maintenance, standing armies) at zero in the opening years; and for territory whose control genuinely won’t come up, the better move is deleting the buildings there or handing the land to a vassal rather than continuing to invest in it. One reply’s summary is worth keeping as a rule of thumb: taxable income is wealth times control — fix control first, and every other improvement you make starts actually paying off.

Opening moves: the formable path

The wiki’s own (brief) strategy note lays out a clean three-step route to the Two Sicilies and beyond:

1. Declare war on Sicily and form the Two Sicilies.
2. Declare on the Papal States to vassalize them — worth roughly 20% of their income, and worth taking their dye-producing location specifically in the peace deal.
3. Push naval strength and continue expanding up the Italian boot from there, profiting as you go.

Combine this with the control-first economic discipline above, rather than racing straight into step one before your capital region’s control is solid — the wiki’s route tells you where to expand; the reddit thread tells you how not to go broke doing it.

Common death spirals

Sources checked

Formation, starting demographics, and the brief wiki strategy note are transcribed from the wiki. The economic-discipline section draws on a substantive r/EU5 discussion thread that used Naples as its running example rather than being a dedicated Naples guide — we’ve treated it as community-tier and cross-checked its claims against our own economy and control mechanics pages, where they hold up consistently. The diplomatic framing repeats this site’s own prior research from our beginner nations guide.