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Independent UK reviews of PC tower-defence gamesSteam UK and GOG prices read 31 October 2026

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The war chest

Everything about paying for the twelve: where, how, what protects you, and when to wait.

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Steam or GOG

Seven of the twelve are on both stores. Side by side prices in pounds, which store has DRM-free copies and where the sale is today.

Compare the stores

Pay

Ways to pay

Cards, PayPal, paysafecard and wallet codes on Steam and GOG, and what each one does to your protection if something goes wrong.

See the options

Rights

Refunds and rights

Steam's two-hour rule, GOG's 30 days, and the UK law underneath both: the Consumer Rights Act, Section 75 and chargebacks.

Know your rights

The short version

  • Buy on Steam or GOG directly. Key resellers are cheaper some weeks and a headache in others; we never quote them as the price of a game.
  • The cheapest game on our list today is Defense Grid 2 at £8.50; the dearest is They Are Billions at £26.75. Tower defence is a cheap genre to be good at.
  • Seven of the twelve are on GOG as well as Steam, and GOG was running a deeper sale on the day we checked.
  • Add-ons matter less here than in most genres: six of the twelve have paid playable add-ons, all of them a few pounds each, and none has a season pass. Build order adds it all up.

The rest of the chest

  • Gift cards and wallet codes: where to buy them on the high street, and the one thing to know before you load a wallet.
  • Sale calendar: when the big Steam and GOG sales usually land, so you can time a purchase.

General information for players in the UK, checked on 31 October 2026. It is not legal or financial advice, and nothing here suggests borrowing to buy a game. Where we quote a law we link to the official text so you can read it yourself.