Supermechs can you add weapon fragments and fragment craft,it would good if you add Weapon fragment and craft system,and the rule is:

1.Rare=20 fragments

2.Epic=50 Fragments

3.Legendary=100 Fragments

And 4.Mythical=200 fragments

5.Each player buying an item box,75% chance to get 1 random rarity weapon fragment

6.Player can Combine 3 weapon fragments for 1 random weapon fragments,Example:3 Rare Combined to 1 Random Epic Weapon Fragment

7.1 Craft consume 5 Minutes to craft a Weapon

8.Mythical Weapon craft success chance is 90% other rarity is 100%(if the crafting is fail,the Fragments will be given all back but cannot craft it again in 15 Minute)

9.Chance to get weapon fragment when player get fragment is:
(1.Rare=75%

(2.Epic=50%

(3.Legendary=25%

(4.Mythical=10%

10.Player can choose all item type(Mythical and Legendary Only), Example:Player A want a random melee side weapon,and Player A choose melee side weapon type

Note:On rule 10,player only can choose item type,so player cannot choose the weapon he/she wanna choose

(sorry if there some bad english)