A Citadelum Steam Key — also known as a CD Key or digital code — is the official activation code you redeem on Steam and keep in your library permanently. From €5.28 (€5.52 with fees, -63%) at Difmark, Steam Account format · Cheapest official key: €6.26 (€6.89 with fees), 54% below the €14.99 (no fees) Steam price · 11 verified stores, 17 offers in stock · Updated 07h 42min ago.
Final prices with fees and discounts applied
Citadelum for PC starts at €5.28 (€5.52 with fees) at Difmark, 63% under the €14.99 (no fees) of the official store — but that is a shared account, not a key of your own. If you want a key tied to your own account, the cheapest is €6.26 (€6.89 with fees) at Driffle.
That €5.28 (€5.52 with fees) already includes the Gocdkeys coupon, so apply it at checkout or the store will show you a higher price.
With 17 offers across 11 stores there is enough competition for the price to move, so the gap between the cheapest and the rest is worth checking before you buy.
It is €0.35 away from its all-time low (€6.60, back in June 2026).
That €6.26 (€6.89 with fees) key is at one of its best prices.
Worked out from 1,436 daily records of the Steam Key for Citadelum across 10 stores. See the full price history.
The price does not include each store's payment fees. The percentage is measured on the store price, without coupons, because that is how we record the history. The analysis only counts Key offers. Shared accounts, Steam Gift and physical editions stay out, because they are not the same product and their prices move differently.
With the shared account at Difmark you log into an account that already owns the game: it is the cheapest route, but it never becomes yours and the seller keeps the credentials. If they ever lose or change them, you lose access.
The key at Driffle costs €0.98 (€1.37 with fees) more, but you redeem it on your own account and the game stays there for good. That is the difference between renting and buying.
The 4 Steam Gift offers are pricier than the key and leave more room for error, because they depend on the region and on Steam friendship.
14 of the 17 offers work on US — the Global ones plus the ones issued for your own region.
Critics Rating
Player Rating
Citadelum brings city building to the next level, and although some ideas feel a bit like busywork, at the base of it all is an... Read more
It captures the additive nature of classic city builders of the past and iterates upon them successfully. It's almost a comfort in how familiar it... Read more
Citadelum is a compelling Roman city builder that excels in its core objectives but is hindered by ambitious yet unpolished features. While it effectively captures... Read more
This is the kind of indie game that I would love to see succeed, and the next steps post-launch, both in terms of ongoing development... Read more
Citadelum takes the genre and adds new life to it by weaving divine interaction into the core of city management. Fans of games like Caesar,... Read more
Citadelum had immense potential to be an extraordinary game, but only if it had more complexity and variation. Abylight Studios made a decent attempt to... Read more
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What do our users think of Citadelum for PC Digital?
A sprawling city-builder inspired from Ancient Rome, grow farms, temples and legions, trade across borders, and please your gods with festivals or animal or human sacrifices. It has the history and content depth, along with the sandbox freedom, of a city-builder.
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