Grafts

Body parts: slots, tiers, rarity and drop odds, fusion and selling.

Slots

A bug wears up to eight Grafts, one per slot. Each slot boosts its stats by the Graft’s tier and rarity.

Slot	Boosts
Weapon	STR
Legs	SPD (half), STR (half)
Head	DEF
Back	DEF (half), SPD (half)
Eyes	SPD (half), INT (half)
Antennae	INT
Thorax	HP
Abdomen	HP

Tiers

Higher tiers give more, and need a higher level to wear.

Tier	Material	Bonus per slot (Common)	Level to wear	Fusion cost
T1	Soft Chitin	+2%	1	—
T2	Hardened Chitin	+4%	10	150 Amber
T3	Mineral Shell	+7%	20	600 Amber
T4	Bone Lattice	+10%	35	2,000 Amber
T5	Crystal Carapace	+14%	50	6,000 Amber
T6	Obsidian Scale	+18%	70	18,000 Amber
T7	Stormheart	+23%	90	50,000 Amber

Rarity

Rarity multiplies a Graft’s tier bonus. A Legendary is worth about one tier more, but never beats a Common two tiers higher.

Rarity	Bonus ×	Over a Common of the same tier
Common	1×	—
Rare	1.15×	+15%
Epic	1.35×	+35%
Legendary	1.6×	+60%

The same T3 part at every rarity (HP on a level-20 bug)
Rarity	Weapon	Legs	Thorax
Common	+7% STR	+3.5% SPD, +3.5% STR	+81 HP
Rare	+8.1% STR	+4% SPD, +4% STR	+93 HP
Epic	+9.5% STR	+4.7% SPD, +4.7% STR	+109 HP
Legendary	+11.2% STR	+5.6% SPD, +5.6% STR	+129 HP

How rare: the odds wherever a Graft’s rarity is rolled
Where	Common	Rare	Epic	Legendary
Fights, expedition finds and crates	80%	15%	4% (1 in 25)	1% (1 in 100)
Fusion	70%	20%	8% (1 in 13)	2% (1 in 50)
Expedition treasures, a brood queen’s larder, a wild swarm’s camp	never	70%	25%	5% (1 in 20)
Digging a fossil cradle	40%	40%	17%	3% (1 in 33)

HP Grafts

Thorax and abdomen Grafts add HP: their bonus is a share of your level HP (150 + 50 × level), so they grow as you level.

One HP Graft at the level its tier opens
Tier	Level	Common	Rare	Epic	Legendary
T1	1	+4	+5	+5	+6
T2	10	+26	+30	+35	+42
T3	20	+81	+93	+109	+129
T4	35	+190	+218	+257	+304
T5	50	+371	+427	+501	+594
T6	70	+657	+756	+887	+1,051
T7	90	+1,070	+1,230	+1,444	+1,711

Fusion

In the Graft Chamber, 3 Grafts of the same slot and tier plus Amber make one Graft of the next tier. Its rarity is rolled fresh (odds above), whatever the parts were. You need the level to wear the new tier.

Selling Grafts

The Shop always buys spare Grafts. Players usually pay more on the Item Market (see Market and Shop).

What the Shop pays
Tier	Common	Rare	Epic	Legendary
T1	60	96	150	240
T2	270	432	675	1,080
T3	1,170	1,872	2,925	4,680
T4	2,000	3,200	5,000	8,000
T5	3,500	5,600	8,750	14,000
T6	6,000	9,600	15,000	24,000
T7	10,000	16,000	25,000	40,000