Backpack Guide and Upgrade Costs

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What are backpacks and how to use them?


Backpacks are offhand items that automatically collect drops obtained in a server’s PvE area. Only one backpack can be equipped at a time.

Unlike traditional storage items, backpacks cannot be manually filled with items. Instead, they only store eligible drops collected automatically while equipped. Players can access stored drops through the backpack menu (Shift + Right Click) or manually sell sellable contents using /sellall.

Depending on the server, a Standard Backpack can usually be purchased in-game from the Gold Merchant for 2,048 Gold Shards. In addition, there are several other backpack variants available, including Seasonal Crate backpacks, timed backpacks obtained through PvE drops or rewards, as well as vKit backpacks which can be obtained through the store as a part of a vKit voucher. Each type will be covered in more detail in the corresponding server backpack sections.


How to upgrade a backpack?

A backpack’s capacity can be upgraded using Gold Shards across all servers, although upgrade costs vary depending on the server type. Prison backpacks, for example, use a different pricing structure per tier compared to PvE backpacks on other servers.

To upgrade a backpack, open its menu and select the upgrade option. Left-clicking upgrades the backpack by one level, while right-clicking performs a bulk upgrade using all Gold Shards available in your inventory. Gold Shards stored inside shulker boxes can also be used for upgrades while in your inventory. One caveat is that backpacks cannot be upgraded while combat tagged!

At level 1, a backpack starts with a capacity of 500 slots. Each additional upgrade increases the storage capacity by 250 slots.
Upgrading PvE backpacks also increases loot gained within the corresponding PvE area of each server, granting a +3% loot bonus per level. Non-default backpacks, such as seasonal or event variants, receive a 1.25× multiplier to this bonus. The exceptions to these rules will be covered in server specific sections.

Table with all the capacity upgrades, loot bonuses and upgrade costs will be added at the end of the guide.



Prison Backpacks

Backpacks are one of the most important tools on Prison, alongside your pickaxe. There are two main types of backpacks: Mining Backpacks and PvE Backpacks.

Restrictions:
- Both types can only hold minable/farmable drops + tokens/keys/pouches/shards/dynamite — not gear/consumables
- You may not use them interchangeably - Mining BP won't pick up Skull Island loot and vice versa.

Mining Backpacks
  • Store blocks mined with your pickaxe.
  • By default, mined blocks are sent to your inventory first unless Backpack Pickup Priority is enabled.
  • Upgrading a Mining Backpack increases its storage capacity.
  • One of the Pickaxe auto-sell upgrades allows you to also auto-sell items from your backpack.
  • When it comes to Mining Backpack types:
    • You receive a Standard Mining Backpack as a part of the Starter Kit upon joining the server
    • Seasonal Crate Exclusive Mining Backpacks (check /warp infuser for specific crates)
Skull Island (PvE) Backpacks
  • Automatically collect eligible drops before they enter your inventory.
  • Upgrading a PvE Backpack increases both its storage capacity and its bonus loot drop percentage.
  • Each level grants an additional loot bonus, making higher-level backpacks significantly more rewarding for PvE activities.
  • When it comes to Backpack types:
    • You may purchase a default Skull Backpack at the Skull Island Gold Merchant for 2048 Gold Shards.
    • Plunderer's Backpack is a rare drop from Skull Island mobs that is a "timed" item meaning it will expire once its timer runs out - all of its runes will lose their effects. The time duration varies on their tiers, and the runes are RNG from the seasonal crate specific backpack runes
    • Seasonal Crate Exclusive Skull Backpacks (check /warp infuser for specific crates)

Unlike other servers, Prison has a hard cap on backpack upgrades at Level 200, as mentioned earlier in this guide. The shard costs required for upgrades also differ from those on other servers.

Because of these differences, a Prison-specific upgrade table is provided below.

Note that levels 1-30 have a 25% gold shard discount, starting from level 31+ the standard price applies. Also note that the loot bonus only applies to Skull Island backpacks, not the Mining ones.

LevelCapacityShard CostLoot BonusCumulative Cost
15000+3%0
2750670+6%670
31,000700+9%1,370
41,250729+12%2,099
51,500758+15%2,857
61,750787+18%3,644
72,000816+21%4,460
82,250845+24%5,305
92,500875+27%6,180
102,750904+30%7,084
113,000933+33%8,017
123,250962+36%8,979
133,500991+39%9,970
143,7501,020+42%10,990
154,0001,049+45%12,039
164,2501,079+48%13,118
174,5001,108+51%14,226
184,7501,137+54%15,363
195,0001,166+57%16,529
205,2501,195+60%17,724
215,5001,224+63%18,948
225,7501,254+66%20,202
236,0001,283+69%21,485
246,2501,312+72%22,797
256,5001,341+75%24,138
266,7501,370+78%25,508
277,0001,399+81%26,907
287,2501,429+84%28,336
297,5001,458+87%29,794
307,7501,487+90%31,281
318,0002,060+93%34,857
328,2502,099+96%36,956
338,5002,138+99%39,094
348,7502,177+102%41,271
359,0002,216+105%43,487
369,2502,255+108%45,742
379,5002,294+111%48,036
389,7502,332+114%50,368
3910,0002,371+117%52,739
4010,2502,410+120%55,149
4110,5002,449+123%57,598
4210,7502,488+126%60,086
4311,0002,527+129%62,613
4411,2502,566+132%65,179
4511,5002,605+135%67,784
4611,7502,643+138%70,427
4712,0002,682+141%73,109
4812,2502,721+144%75,830
4912,5002,760+147%78,590
5012,7502,799+150%81,389

LevelCapacityShard CostLoot BonusCumulative Cost
5113,0002,989+153%83,708
5213,2503,180+156%86,888
5313,5003,370+159%90,258
5413,7503,561+162%93,819
5514,0003,751+165%97,570
5614,2503,942+168%101,512
5714,5004,132+171%105,644
5814,7504,323+174%109,967
5915,0004,513+177%114,480
6015,2504,704+180%119,184
6115,5004,894+183%124,078
6215,7505,085+186%129,163
6316,0005,275+189%134,438
6416,2505,466+192%139,904
6516,5005,656+195%145,560
6616,7505,847+198%151,407
6717,0006,037+201%157,444
6817,2506,228+204%163,672
6917,5006,418+207%170,090
7017,7506,609+210%176,699
7118,0006,799+213%183,498
7218,2506,990+216%190,488
7318,5007,180+219%197,668
7418,7507,371+222%205,039
7519,0007,562+225%212,601
7619,2507,752+228%220,353
7719,5007,943+231%228,296
7819,7508,133+234%236,429
7920,0008,324+237%244,753
8020,2508,514+240%253,267
8120,5008,705+243%261,972
8220,7508,895+246%270,867
8321,0009,086+249%279,953
8421,2509,276+252%289,229
8521,5009,467+255%298,696
8621,7509,657+258%308,353
8722,0009,848+261%318,201
8822,25010,038+264%328,239
8922,50010,229+267%338,468
9022,75010,419+270%348,887
9123,00010,610+273%359,497
9223,25010,800+276%370,297
9323,50010,991+279%381,288
9423,75011,181+282%392,469
9524,00011,372+285%403,841
9624,25011,562+288%415,403
9724,50011,753+291%427,156
9824,75011,943+294%439,099
9925,00012,134+297%451,233
10025,25012,325+300%463,558


Skyblock Backpacks

Skyblock currently features two areas where backpacks can be used: Pharaoh's Tomb and the Dungeon.

Backpacks provide different bonuses depending on the area:
  • Pharaoh's Tomb backpacks function similarly to Prison's Skull Island backpacks, granting +3% loot bonus and capacity per level. They also automatically collect eligible loot dropped within the Tomb.
  • Dungeon backpacks grant a Dungeon Coin bonus based on their tier, providing +1% Dungeon Coins per tier - meaning 10% buff is the cap at T10 Backpacks.
  • When it comes to Backpack types:
    • The default Tomb Backpack can be obtained as loot from mobs inside the Pharaoh’s Tomb, or purchased from the Golden Merchant in T2 for 2048 Gold Shards.
    • Seasonal Crate Backpacks can be obtained through seasonal crates and can be viewed at /warp infuser for the available rotations and details.
    • Angelic Backpacks are rare, timed items that drop infrequently in the Tomb, or can be purchased in the Dungeon shop, and will expire after their duration runs out, similarly to the Prison variant.
Unlike Tomb backpacks, the bonus from Dungeon backpacks is tied to the backpack's tier, not its level. Upgrading the backpack's level only increases its storage capacity and does not increase the Dungeon Coin bonus.

It is also important to note that Dungeon Coins are awarded directly to the player and are not stored inside the backpack. The backpack only collects eligible item drops obtained within the Dungeon.


Survival Backpacks

Survival currently only has one zone where Backpacks work - the Dragon's Dojo.
  • The Dojo Backpacks have only the standard PvE buffs - granting +3% loot bonus and increased capacity per level. They also automatically collect eligible loot dropped within the Dojo.
  • When it comes to the types:
    • The Standard Dojo Backpack can be obtained as a rare mob drop, and there are no timed variants.
    • The main source of Backpacks are the exclusive Seasonal Crate ones (check out further at /warp infuser)


Lifesteal Backpacks

Lifesteal has one area where Backpacks can be used: the Colosseum.
  • The Colosseum Backpacks have increased loot drops and capacity upon upgrades, +3% loot drops per level alike the other server variants
  • Lifesteal Backpacks have a bit more types compared to the previously mentioned ones, as well as ways of obtaining them:​
    • Standard Backpack - The default backpack can be obtained through the in-game /shop, purchased from the Gold Merchant in the T3 Colosseum for 2,048 Gold Shards, or earned via the Clan “Pack Rat” milestone for upgrading backpacks.
    • The Emperor’s Backpack is the timed backpack variant - obtained from Colosseum mob loot. Like other timed items, it is contraband and expires after a set duration.
    • Lifesteal also includes VKit backpacks, which are tied to clan milestone completions. These provide a PvP-oriented rune effect and come as part of a full kit reward set that can be earned repeatedly through progression.
    • Lastly, exclusive Seasonal Crate backpacks are available through rotating seasonal content and can be viewed via /warp infuser.


Factions Backpacks



Factions server has two areas in which Backpacks can be used: the Lightzone and the Darkzone.

This in turn also provides 2 additional backpack types tied to said zones:
  • Angelic Backpack - timed contraband backpack variant obtainable in the Lightzone as a part of its mob drop loot
  • Corrupted Backpack - irs counterpart from the Darkzone. Each have one random seasonal rune assigned to them upon dropping.

Other obtainable backpacks largely correspond to other server types:
  • The "default" Backpack is the Darkzone Backpack - not to be confused with Corrupted - this one is permanent/doesn't expire and has a higher chance of dropping from mob loot compared to others.
  • vKit variants - blue and red - which can be purchased on our store as part of the vKit vouchers, as well as having low chance of dropping from the Lightzone
  • Finally, across all servers there are the exclusive Seasonal Crate backpacks (detailed rune effects at /warp infuser)



    Backpack Upgrade Cost table
    These tables apply to all servers other than Prison (Skyblock, Survival, Lifesteal and Factions) and show the costs for all PvE backpacks.

    There is no upgrade level cap, meaning you can theoretically upgrade them infinitely. However, unlike on Prison once again, there are no discounts applied on any levels, so the cost increases exponentially as you continue upgrading.

    LevelCapacityShard CostLoot BonusCumulative Cost
    15000+3%0
    2750222+6%222
    31,000234+9%456
    41,250247+12%703
    51,500260+15%963
    61,750274+18%1,237
    72,000289+21%1,526
    82,250305+24%1,831
    92,500322+27%2,153
    102,750339+30%2,492
    113,000358+33%2,850
    123,250377+36%3,227
    133,500398+39%3,625
    143,750419+42%4,044
    154,000442+45%4,486
    164,250466+48%4,952
    174,500492+51%5,444
    184,750519+54%5,963
    195,000547+57%6,510
    205,250577+60%7,087
    215,500608+63%7,695
    225,750641+66%8,336
    236,000676+69%9,012
    246,250713+72%9,725
    256,500752+75%10,477
    266,750793+78%11,270
    277,000836+81%12,106
    287,250882+84%12,988
    297,500929+87%13,917
    307,750980+90%14,897
    318,0001,033+93%15,930
    328,2501,089+96%17,019
    338,5001,149+99%18,168
    348,7501,211+102%19,379
    359,0001,277+105%20,656
    369,2501,347+108%22,003
    379,5001,420+111%23,423
    389,7501,497+114%24,920
    3910,0001,579+117%26,499
    4010,2501,665+120%28,164
    4110,5001,755+123%29,919
    4210,7501,851+126%31,770
    4311,0001,951+129%33,721
    4411,2502,058+132%35,779
    4511,5002,170+135%37,949
    4611,7502,288+138%40,237
    4712,0002,412+141%42,649
    4812,2502,544+144%45,193
    4912,5002,682+147%47,875
    5012,7502,828+150%50,703

    LevelCapacityShard CostLoot BonusCumulative Cost
    5113,0002,982+153%53,685
    5213,2503,145+156%56,830
    5313,5003,316+159%60,146
    5413,7503,496+162%63,642
    5514,0003,686+165%67,328
    5614,2503,887+168%71,215
    5714,5004,098+171%75,313
    5814,7504,321+174%79,634
    5915,0004,557+177%84,191
    6015,2504,804+180%88,995
    6115,5005,066+183%94,061
    6215,7505,342+186%99,403
    6316,0005,632+189%105,035
    6416,2505,939+192%110,974
    6516,5006,262+195%117,236
    6616,7506,603+198%123,839
    6717,0006,962+201%130,801
    6817,2507,341+204%138,142
    6917,5007,740+207%145,882
    7017,7508,161+210%154,043
    7118,0008,605+213%162,648
    7218,2509,073+216%171,721
    7318,5009,567+219%181,288
    7418,75010,088+222%191,376
    7519,00010,637+225%202,013
    7619,25011,215+228%213,228
    7719,50011,826+231%225,054
    7819,75012,469+234%237,523
    7920,00013,148+237%250,671
    8020,25013,863+240%264,534
    8120,50014,617+243%279,151
    8220,75015,413+246%294,564
    8321,00016,251+249%310,815
    8421,25017,135+252%327,950
    8521,50018,068+255%346,018
    8621,75019,051+258%365,069
    8722,00020,088+261%385,157
    8822,25021,181+264%406,338
    8922,50022,333+267%428,671
    9022,75023,548+270%452,219
    9123,00024,829+273%477,048
    9223,25026,180+276%503,228
    9323,50027,605+279%530,833
    9423,75029,107+282%559,940
    9524,00030,691+285%590,631
    9624,25032,361+288%622,992
    9724,50034,122+291%657,114
    9824,75035,978+294%693,092
    9925,00037,936+297%731,028
    10025,25040,000+300%771,028


    Notes
    - Skyblock adds its separate *Dungeon Coins +1%/tier* stat on top — that's tier-based, not in this table
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