A Mainframe Defenders 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 €0.72 at Gamivo · 6 verified stores, 13 offers in stock · Updated 08h 19min ago.
Mainframe Defenders for PC starts at €0.72 at Gamivo, a Steam key.
That €0.72 already includes the GCDKGamivo coupon, so apply it at checkout or the store will show you a higher price.
The cheapest one listed, €0.50 at Gameseal, is out of stock. The cheapest you can actually buy today is €0.72 at Gamivo.
With 13 offers across 6 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.
That €2.01 key is at its usual price: no bargain, no spike.
Worked out from 1,224 daily records of the Steam Key for Mainframe Defenders across 9 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.
By format: Steam Key from €0.72, GOG Key from €2.45 and Steam Gift from €3.69.
10 of the 13 offers work on US — the Global ones plus the ones issued for your own region.
One listing is worth ignoring: the Steam gift that G2A has at €5.22 is more than 7 times the cheapest offer and is not what this game costs. The number to work from is €0.72 at Gamivo.
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