Backpacks are a supplement to armor suits that allow you to carry additional weapons and assist items in Star Warfare: Alien Invasion. Backpacks work independently of armor; backpacks do not affect armor sets with their bonuses, and vise versa. That said, different backpacks allow you to carry more items and have special buffs as well, such as power boosts, speed increases, health regeneration, and occasionally an ability such as hovering. By default (start of the game) you can carry only 3 guns/assist items.
Weapons and items can only be used in battle if they have been placed in the backpack prior to entering any room. To place equipment into the bag, a player must access the Customize menu, and then tap the "Pack" button. This will bring up a selection grid of all the equipment the player owns, with the row of squares at the bottom of the screen representing the player's bag and any equipped items. Some backpacks allow the user to levitate and hover over any bosses poison
Each bag has a different limit on how many items can be stored in it. For example, a backpack with a capacity of 5 will be able to store a total of 5 weapons or assist items.
Backpacks make a return in Star Warfare 2: Payback, but no longer increase the amount of items you are allow to hold.
| Name | Cost ($) | Slots | HP | POW | Energy | SPD | Others |
|---|---|---|---|---|---|---|---|
| VB-03-II | 0 | 3 | +200 | ||||
| VB-03-III | 25,000 | 3 | +300 | +10% | |||
| SP-04-IV | 40,000 | 4 | +500 | -20% | |||
| SP-11-V | 8 Mithril | 3 | +300 | +10% | +1 | ||
| KP-101-X | 10 Mithril | 4 | +500 | +40HP per kill | |||
| VP-22-VII | 150,000 | 4 | +600 | +15% | +20% EXP | ||
| SPD-005-a | 100,000 | 5 | +700 | +30% shotgun POW, -10% for others | |||
| ECO-03-VI | 200,000 | 3 | +500 | -10% | +1 | +10% Gold | |
| TT-05-b | 280,000 | 5 | +1000 | Damage Taken -20% | |||
| SAM-005-I | 60 Mithril | 5 | +800 | +20% | +1 | +25% Gold | |
| STK-06-ZZ | 700,000 | 6 | +900 | +30% | +50% | +2 | |
| HYD-00-IX | 48 Mithril | 5 | +1500 | +15% |
+60HP/sec 20% chance to immune from attack** | ||
| H.F-V-03 | 95 Mithril | 6 | +1200 | For team: +70 HP/sec (This effect does NOT stack)
+30% effect of all HP items | |||
| STK.F-VI-00 | 85 Mithril | 6 | +800 | For Team: +20% POW (does not stack)*^ | +1 | Team effect does not stack | |
| XO2B-FREEDOM | 150 Mithril | 6 | +2000 | +10% | Unlimited | +40HP/sec | |
| F.L.O.A.T^ | 120 Mithril | 6 | +1500 | +20% | +1 |
+10% Gold Immune to ground hazards Use: +2 SPD (30s duration, 60s cool-down) | |
| VISNU | 120 Mithril | 6 | +4000 |
+10% EXP For team: -20% damage taken | |||
| TRI-O-AVATAR | 120 Mithril | 6 | +3500 | +15% | +1 | Use: -85% damage taken (5s duration, 35s cool-down) | |
| BLADE-MASTER^^ | 1,200,000 | 4 | +1000 | +40% Melee attacks POW | Immune to ground hazards | ||
| TOUCH AND GO | 1,000,000 | 5 | +2000 | +1 | If hit, +2 SPD for a short time (PvP & PvE) | ||
| DRACULA |
110 Mithril |
6 | +3000 | +5% | ***Use: Reduce some of your POW while transforms part of the damage you deal into HP. (10s duration, 120s cool-down). | ||
|
JIN.JINGLE |
140 Mithril | 6 | +3600 |
+30% POW For team: +10% POW (does not stack) |
+2 |
+35% Gold +30% EXP +20HP per kill +10% chance to immune from attack** | |
| S.H.I.E.L.D |
200 Mithril |
6 | +4000 | +25% | +1 | Use: Generate dark winds which drains HP from others. (60s cool-down)
+30% EXP | |
| D-WINGS^ |
218 Mithril |
6 | +4000 | +15% | +2 | +30% EXP
If hit: +1 SPD for a short time +50 HP per sec +25% Gold Immune to ground hazards. | |
| Spectre |
188 Mithril |
6 | +3000 | +5% | +1 | +25% EXP
If hit: +1.5 SPD for a shot time +10% Gold 30% chance to immune from attack** |
**Note: This means that for x% of the time, a single projectile will be negated by a shield.
+Note: Recommended for people who don't like to buy ammo. Your energy still appears on screen, but it doesn't get expended when you fire your weapon while using this bag.
^Note: Immunity to ground hazards is a permanent effect. The F.L.O.A.T bag has the ability to activate a temporary +2 speed boost for 30 seconds.
*^Note: The STK.F will override the effects of the Jin.Jingle, they will not add together to give +30% power to the team
^^Note: This is similar to the F.L.O.A.T bag in its floating aspect, but it trades the speed boost ability and 2 bag slots for a +40% sword passive power boost.
***Note: Specific functions of the Dracula:
- Estimated Power Trade-off: -25% POW
- Proven HP Absorption: 65% of effective damage output when ability is not active
[edit]
| Backpack | Cost | Bonuses | Description | Requirements/Notes | PvP Unlock Level | ||||
|---|---|---|---|---|---|---|---|---|---|
| Health | Damage | Speed | Gold | EXP | |||||
 UNCC-ADV
|
Default | 200 | --- | --- | --- | --- | Never again let the discomfort of massive ammo stock weigh you down, UNCC applies mirco-energy buoyancy to backpacks so soldiers become walking munition holds. | No requirements. Matches with Helium Armor. | 1 |
 UNCC-LTD
|
 40,000
|
400 | --- | --- | 10% | --- | A sleeker edition of the backpack to increase resource gathering. | Finish Stage 1 Normal. | 9 |
 Gravity
|
 600
|
1000 | 15% | 1 | 15% | 15% | An experimental jetpack for shock troop infiltration. | Finish Stage 2 Normal. One of the two backpacks that allow the user to hover, avoiding ground hazards such as the lava pits in Cerberlisk's arena. | 16 |
 WanG-VIII
|
900,000
|
3000 | --- | 0.5 | --- | --- | This scout backpack generates an unpredictable shield. | Finish Stage 3 Normal. Has a 15% chance to nullify damage taken. Stacks with a VOID's Immunity passive for a 25% chance. | 24 |
 MiT-Blue
|
1,400,000
|
2200 | 50%* | --- | 10% | 10% | Thirsty for unlimited energy, UNCC scientists devised this backpack prototype. | Finish Stage 4 Normal. Increases Energy DMG by 50% only when equipped with a single weapon. | 29 |
 Immortal
|
2,000
|
3600 | --- | 1 | 20% | 20% | Space symbiotes infest this questionable medical experiment, staving off death. | Finish Stage 3 Heroic. When HP is lower that 45%, it heals 2% per second for the team. | 34 |
 Illusion
|
1,800
|
10000 | 15% | --- | --- | --- | A light bag made from some kind of material from the Crimson Queen. | No requirements. Removes SPD penalty when shooting. Matches with Corrosion Armor. | 1 |
 Glory
|
2,900,000
|
10000 | --- | 1 | 15% | 15% | A bag of special transmission material | Finish Stage 3 Heroic. Any pickups you obtain also affect your allies by 50%. Matches with Krypton Armor. | 39 |
 Brand's Gift
|
1,800
|
6000 | 25% | 1 | 25% | 25% | A new bag brought from UBW-594244 by Dr. Brand. | Finish Stage 1 Heroic. One of the two backpacks that allow the user to hover. When equipped with a TI-14 Firework RPG, it shoots two missiles instead of one. Matches with Magma Armor. | 22 |
 Merge
|
3,600,000
|
7200 | 10% | 1 | 10% | 10% | A magical reaction enables the bag to generate a shield for UNCC soldiers. | Finish Stage 3 Heroic. Generates a shield with 20% of the user's Max HP after not taking damage for 5s. Matches with Harrier Armor. | 31 |
 Specter
|
2,200
|
10000 | 10% | 0.5 | 15% | 15% | You can sense a strange energy coming from this bag. | Finish Stage 3 Heroic. Generates a shield for the user every 30s. Once the shield breaks, the user is invulnerable for 2s. Damage taken during this time will be converted to additional DMG when the invulnerability period is over. Matches with Wrath Armor. | |