List of Upgrades

General: Defence 45 sp (not available in non premium)
Your General adds +1 defence to all units in the stack

Naval Stealth 90 sp (100 non premium)
Unlocks Naval Stealth units (f.e. Submarines)

Imperialist 180 sp (200 non premium)
Unlocks a new strategy: Imperialist. Reduced cost and -1 attack for all units.

Air support 360 sp (400 non premium)
Unlocks Air support units (f.e. Sentry Plane)

Naval Transport Capacity 630 sp (700 non premium)
+5 capacity for Naval Transports.

Ground Stealth 900 sp (1000 non premium)
Unlocks Ground Stealth units (f.e. Marines)

Master Of Stealth 1350 sp (1500 non premium)
Unlocks a new strategy: Master Of Stealth. Advanced stealth units at the cost of slower and less powerful Main Attack units.

Ground Secondary Defence 1800sp (2000 non premium)
Unlocks Ground Secondary Defence units (f.e. Militia)

Faster General 2700 sp (not available for non premium)
+1 to General's movement range

Guerrilla Warfare 3600 sp (4000 non premium)
Unlocks a new strategy: Guerrilla Warfare, Advanced Ground Secondary Defence units and cheaper Ground Stealth units at the cost of weaker Ground Main attack and Ground Main defence units.

General: Ground Secondary Defence 4500 sp (not available in non premium)
Your General adds +1HP to all Ground Secondary Defence units in the stack.

Air Transport Capacity 5400 sp (6000 non premium)
+1 capacity for Air Transport units.

General: Ground Main Defence 5850 sp (not available for non premium)
Your general adds +1 attack to all Ground Main Defence units in the stack.

Lift The Fog 6300 sp (7000 non premium)
+1 view range for all units.

General: view range 7200 sp (not available for non premium)
Your General adds +2 view range to all units in the stack

Stronger Ground Special Defence 7650 sp (8500 sp non premium)
+1 defence to Ground Special Defence units.

Ground Special Defence 7650 sp (8500 non premium)
Unlocks Ground Special Defence units (f.e. Anti-aircraft)

Faster Naval Stealth 8100 sp (9000 non premium)
+1 movement range for Naval Stealth units.

Sky Menace 9000 sp (10000 non premium)
Unlocks a new strategy: Sky Menace. Advanced Air units at the cost of weaker Ground units.

Mobile Ground Special Defence 9450 sp (10500 non premium)
+3 movement for Ground Special Defence units.

General: cost 9900 sp (not available for non premium)
Your general reduces weekly maintenance for all units in the stack by 4

Affordable Support 10350 sp (11500 non premium)
-50 cost for all Support units

Blitzkrieg 10800 sp (12000 non premium)
Unlocks a new strategy: Blitzkrieg. +3 to movement, +2 to view range and -2 defence for all units.

Safer Transportation 11700 sp (13000 non premium)
+3 HP to all Transport units

General: Ground Main Attack 12600 sp (not available for non premium)
Your General adds +1 attack to all Ground Main Attack units in the stack.

Lift The Fog II 13050 sp (not available for non premium)
+1 view range for all units.

Lucky Ground Secondary Defence 13950 sp (15500 non premium)
+2 to critical chance for Ground Secondary Defence units.

Faster Naval Main Attack 14400 sp (16000 non premium)
+1 movement range for Naval Main Attack units.

Air Special Attack 14850 sp (16500 non premium)
Unlocks Air Special Attack units (f.e. Helicopters)

Submarine Capacity 15300 sp (17000 non premium
+1 capacity for Submarines (carries Marines only)

Lucky Ground Stealth 16200 sp (18000 non premium)
+2 to critical chance for Ground Stealth units.

Lucky General 17100 sp (not available for non premium)
Your General adds +2 critical chance to all units in the stack

Air Stealth 18000 sp (20000 non premium)
Unlocks Air Stealth units (f.e. Stealth plane)

Lucky Ground Main Defence 18900 sp (21000 non premium)
+2 to critical chance for Ground Main Defence units.

General: Air Main Attack 19800 sp (not available for non premium)
Your General adds +1 attack to all Main Attack Units in the stack.

Faster Ground Stealth 20700 sp (23000 non premium)
+1 movement range for Ground Stealth units.

Expendable Ground Stealth 21600 sp (24000 non premium)
-10 cost for Ground Sealth units.

Cheap Transportation 22500 sp (25000 non premium)
-30 cost for Naval Transport and -50 Air Transport units.

Faster General II 23400 sp (not available for non premium)
+1 to General's movement range

Air Transport Capacity II 24300 sp (27000 non premium)
+1 capacity for Air Transport units.

Faster Ground Main Defence 25200 sp (28000 non premium)
+1 movement range for ground Main Defence units.

General: movement range 26100 sp (not available for non premium)
Your General adds +1 movement range to all units in the stack

Expendable Ground Main Defence 27000 sp (30000 non premium)
-10 cost for Ground Main Defence units.

Hybrid Warfare 31500 sp (not available for non Premium)
Unlocks a new strategy: Hybrid Warfare, a mix between conventional and irregular warfare.

Updated: 6.6.2015