Green Mana is one of two ammunition types used by Hexen weapons. All slot three weapons use green mana, and slot four weapons use both green and blue types. Picking up this item provides 15 mana except on the first and last skill level, which gives 22 mana per pickup. Also, if the player picks up a slot three weapon that he already has, he will gain 25 green mana. The symbol on green mana crystals is the Katakana character ス (su).