Aegis of Earth: Protonovus Assault: Steam price vs key
Aegis of Earth: Protonovus Assault costs €4.66 as a key at BuyCheapKeys, versus a regular price of €19.99 on the Steam Store: you save €15.33 (77% less). The key activates on your Steam account and it's exactly the same game (prices from October 4, 2026).
- Instant deliveryKey by email and in your account
- Full guaranteeReplacement or refund
- Secure paymentCard, PayPal, Google Pay, Apple Pay
- Activates on SteamSame game in your library
- Up to 4% cashbackWith the VIP Club
Should I buy Aegis of Earth: Protonovus Assault now? A steal: buy it now
The key costs €15.33 less than the regular Steam price and is at its lowest recorded price.
Price score: 10/10 · The key is 77% below the regular Steam price.
The same game, for less
A Steam key gives you exactly the same as buying on Steam. Only the price changes.
Available Aegis of Earth: Protonovus Assault keys
1 offer, sorted by price
- €4.66Buy
Aegis of Earth: Protonovus Assault
CheapestSteam keyGlobal-€15.33 compared with the Steam regular price
Aegis of Earth: Protonovus Assault price history
- Steam regular price€19.99
- BuyCheapKeys key€4.66
We've been tracking this game since October 3, 2026. The chart will appear once there are a few days of data.
How to activate the Aegis of Earth: Protonovus Assault key
- 1
Buy the key
Choose the Aegis of Earth: Protonovus Assault offer and pay. You get the key instantly.
- 2
Open Steam
Go to “Games” › “Activate a Product on Steam”.
- 3
Redeem and play
Paste the key and the game stays in your library forever.
Aegis of Earth: Protonovus Assault FAQ
›How much is Aegis of Earth: Protonovus Assault on Steam?
The regular Steam price of Aegis of Earth: Protonovus Assault is €19.99. At BuyCheapKeys the Steam key costs €4.66, €15.33 less.
›Where to buy Aegis of Earth: Protonovus Assault cheapest?
The cheapest option is the BuyCheapKeys Steam key for €4.66, 77% below the regular Steam price. Instant delivery and it activates on Steam.
›Is the Aegis of Earth: Protonovus Assault key the same game as on Steam?
Yes. When you redeem the key, Aegis of Earth: Protonovus Assault is added to your Steam account with achievements, cloud saves and updates, just as if you bought it on Steam.
›What is the lowest price for Aegis of Earth: Protonovus Assault at BuyCheapKeys?
The lowest recorded price for the key at BuyCheapKeys is €4.66 (October 4, 2026). Today it costs €4.66.
›Will the Aegis of Earth: Protonovus Assault key work in my country?
We list Global and Europe region keys. Each BuyCheapKeys product page tells you whether it can be activated in your country before you buy.
›Is it safe to buy from BuyCheapKeys?
Yes. Delivery is instant by email and in your account, we accept card, PayPal, Google Pay and Apple Pay, and every purchase is covered by a replacement or refund guarantee.
›Is Aegis of Earth: Protonovus Assault worth it?
It has 58% positive reviews out of 46 on Steam (“Mixed”), was released in 2016 and is developed by ACQUIRE Corp.. Genres: Strategy, Tower Defense, Anime.
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Aegis of Earth: Protonovus Assault
€4.66