Project Astra Dominium is a Tower Defense game with Basebuilding and Automation elements. Build up your base to become a supply hub for Earth's desperately needed materials, gather resources while defending against an unknown alien threat and improve your tower's and AI capabilities.
Steam price history
Special Promotion, ends 8 October 2026
Current Price-50% $4.99
Lowest Recorded Price-50% $4.99
1 October 2026
Currency
Current Price
Converted Price
Lowest Recorded Price
U.S. Dollar
-50% $4.99
$4.99
$4.99
-50% $4.99
Russian Ruble
-50% 192 ₽
$2.29
-53.99%
$2.29
-50% 192 ₽
Ukrainian Hryvnia
-50% 112₴
$2.48
-50.11%
$2.48
-50% 112₴
Indian Rupee
-50% ₹ 240
$2.49
-49.97%
$2.49
-50% ₹ 240
Indonesian Rupiah
-50% Rp 45499
$2.54
-49.03%
$2.54
-50% Rp 45499
Philippine Peso
-50% ₱167.50
$2.67
-46.36%
$2.67
-50% ₱167.50
Vietnamese Dong
-50% 71000₫
$2.73
-45.24%
$2.73
-50% 71000₫
SASIA - U.S. Dollar
-50% $2.74
$2.74
-45.09%
$2.74
-50% $2.74
LATAM - U.S. Dollar
-50% $2.89
$2.89
-42.08%
$2.89
-50% $2.89
MENA - U.S. Dollar
-50% $2.89
$2.89
-42.08%
$2.89
-50% $2.89
Chilean Peso
-50% CLP$ 2875
$2.90
-41.86%
$2.90
-50% CLP$ 2875
Taiwan Dollar
-50% NT$ 94
$2.95
-40.80%
$2.95
-50% NT$ 94
South African Rand
-50% R 50.00
$3.00
-39.84%
$3.00
-50% R 50.00
Saudi Riyal
-50% 11.24 SR
$3.00
-39.73%
$3.00
-50% 11.24 SR
Chinese Yuan
-50% ¥ 21
$3.13
-37.23%
$3.13
-50% ¥ 21
CIS - U.S. Dollar
-50% $3.14
$3.14
-37.07%
$3.14
-50% $3.14
Kuwaiti Dinar
-50% 0.97 KD
$3.14
-37.06%
$3.14
-50% 0.97 KD
Brazilian Real
-50% R$ 16,49
$3.16
-36.58%
$3.16
-50% R$ 16,49
Kazakhstani Tenge
-50% 1450₸
$3.25
-34.77%
$3.25
-50% 1450₸
Malaysian Ringgit
-50% RM13.37
$3.27
-34.41%
$3.27
-50% RM13.37
Thai Baht
-50% ฿110.00
$3.29
-34.07%
$3.29
-50% ฿110.00
Peruvian Sol
-50% S/.11.50
$3.33
-33.15%
$3.33
-50% S/.11.50
Mexican Peso
-50% Mex$ 61.99
$3.41
-31.60%
$3.41
-50% Mex$ 61.99
Qatari Riyal
-50% 12.49 QR
$3.42
-31.30%
$3.42
-50% 12.49 QR
Japanese Yen
-50% ¥ 600
$3.80
-23.82%
$3.80
-50% ¥ 600
Uruguayan Peso
-50% $U155
$3.83
-23.24%
$3.83
-50% $U155
Singapore Dollar
-50% S$5.00
$3.90
-21.64%
$3.90
-50% S$5.00
Colombian Peso
-50% COL$ 13000
$3.92
-21.26%
$3.92
-50% COL$ 13000
U.A.E. Dirham
-50% 14.50 AED
$3.94
-20.89%
$3.94
-50% 14.50 AED
South Korean Won
-50% ₩ 5500
$4.09
-17.99%
$4.09
-50% ₩ 5500
New Zealand Dollar
-50% NZ$ 7.37
$4.13
-17.05%
$4.13
-50% NZ$ 7.37
Hong Kong Dollar
-50% HK$ 33.00
$4.20
-15.73%
$4.20
-50% HK$ 33.00
Canadian Dollar
-50% CDN$ 6.49
$4.55
-8.71%
$4.55
-50% CDN$ 6.49
Costa Rican Colon
-50% ₡2300
$5.02
+0.61%
$5.02
-50% ₡2300
Australian Dollar
-50% A$ 7.25
$5.03
+0.88%
$5.03
-50% A$ 7.25
Euro
-50% 4,99€
$5.61
+12.57%
$5.61
-50% 4,99€
Norwegian Krone
-50% 55,00 kr
$5.71
+14.59%
$5.71
-50% 55,00 kr
Polish Zloty
-38% 22,99zł
$5.90
+18.26%
$5.90
-38% 22,99zł
British Pound
-50% £4.49
$5.94
+19.16%
$5.94
-50% £4.49
Israeli New Shekel
-50% ₪18.47
$6.05
+21.26%
$6.05
-50% ₪18.47
Swiss Franc
-50% CHF 5.49
$6.62
+32.82%
$6.62
-50% CHF 5.49
Valve suggested prices are shown on package pages.
Some functionality is not accessible when using the default controller configuration, requiring use of the touchscreen or virtual keyboard, or a community configuration
This game sometimes shows mouse, keyboard, or non-Steam-Deck controller icons
Entering some text requires manually invoking the on-screen keyboard
Some in-game text is small and may be difficult to read
This game's default graphics configuration performs well on Steam Deck
SteamOS:
This game runs successfully on SteamOS
Note: Some functionality is not accessible when using the default controller configuration, requiring use of the touchscreen or virtual keyboard, or a community configuration
Note: Entering some text requires manually invoking the on-screen keyboard