Backpack Upgrade

Growtopia Store
Purchase the Backpack Upgrade for 100 in the Growtopia Store.
"Sewing an extra pocket onto your backpack will allow you to store 10 additional item types. How else are you going to fit all these toilets and doors?"
Every purchase will give 1 item.

The Backpack Upgrade is a store item that adds 10 backpack slots to the player. A player begins with 16 backpack slots, including the slots occupied by the Fist and the Wrench. The initial price is 100 Gems, and it increases exponentially after every purchase. A player can have a maximum of 396 backpack slots.

The player earns three different achievements upon making upgrades on his or her backpack capacity. The "Embiggened" achievement is earned on the first purchase, the "Space Commander" achievement on the seventh purchase and the "Master of Space and Time" achievement on the eighteenth.

Backpack Upgrade Costs

Backpack Slots	Price	Cumulative Price
16	Free	Free
26	100 Gems	100 Gems
36	200 Gems	300 Gems
46	500 Gems	800 Gems
56	1000 Gems	1800 Gems
66	1700 Gems	3500 Gems
76	2600 Gems	6100 Gems
86	3700 Gems	9800 Gems
96	5000 Gems	14800 Gems
106	6500 Gems	21300 Gems
116	8200 Gems	29500 Gems
126	10100 Gems	39600 Gems
136	12200 Gems	51800 Gems
146	14500 Gems	66300 Gems
156	17000 Gems	83300 Gems
166	19700 Gems	103000 Gems
176	22600 Gems	125600 Gems
186	25700 Gems	151300 Gems
196	29000 Gems	180300 Gems
206	32500 Gems	212800 Gems
216	36200 Gems	249000 Gems
226	40100 Gems	289100 Gems
236	44200 Gems	333300 Gems
246	48500 Gems	381800 Gems
256	53000 Gems	434800 Gems
266	57700 Gems	492500 Gems
276	62600 Gems	555100 Gems
286	67700 Gems	622800 Gems
296	73000 Gems	695800 Gems
306	78500 Gems	774300 Gems
316	84200 Gems	858500 Gems
326	90100 Gems	948600 Gems
336	96200 Gems	1044800‬ Gems
346	102500 Gems	1147300 Gems
356	109000 Gems	1256300‬ Gems
366	115700 Gems	1372000‬ Gems
376	122600 Gems	1494600‬ Gems
386	129700 Gems	1624300 Gems
396	137000 Gems	‬1761300 Gems