You can only get one item per box. Items are separated in groups and their chances cant be different.

Curious Wooden Box

It drops from monsters, you can open it by double clicking it, if you have a wooden key, which can be bought at the Merchant

It contains:

Enhanced Restoration Scroll, Enhanced Restorain Scroll (mana), Enhanced Restorain Scroll Lv 3	20%
Rupee bags from 1 to 100mil	15%
Poultry Card, Tortus Card, Pantera Card, Orc Card, Yeti Card, Skeleton Card, Red Pixie Card, Blue Pixie Card, Siren Card, Wolf Card, Octopus Card, Lydian Card, Hawkman Card, Salamander Card, Harpy Card, Unicorn Card, Nightmare Card, Angel Card, Kentauros Card, Gnoll Card, Naga Card, Cerberus Card, Genie Card, Ifrit Card, Stone Golem Card, White Dragon Card, Death Tyrant Card	0,5%
Gold Ingot, Iron Ingot	0,4%
Relic Box, Refined Relic Box, Solid Relic Box, Relic Box of Peace, Relic Box of Sharpness	4%

Relic Box

You can get it from Curious Wooden Box. Opens with double click if you have a  Master Key (drops from monsters)

It contains:

White Dragon Card, Death Tyrant Card	3%
Hourglass, Scroll of Creature Taming, Ancient Element - Skill, God Mother's Fairy Bottle, Impact Amplifier	97%

Refined Relic Box

You can get it from  Curious Wooden Box. Opens with double click if you have a Refined Clay Key (drops from monsters)

It contains:

Purified Almighty Pieces(Enhanced) Increases all stats for 2 hours	27%
Rebirth Scrolls, Ancient's Pride, Lydian King, Growth Potion Supreme, Deva's Blessing, Sealing Scroll: Weapons, Secret Feather of Teleportation, Impact Amplifier	73%

Solid Relic Box

You can get it from  Curious Wooden Box. Opens with double click if you have a Solid Clay Key (drops from monsters)

It contains:

Expert Warrior Shard: One Hande-Weapon, Expert Wizard Shard: One Hande-Weapon, Expert Warrior Shard: Two-Hande Weapon, Expert Wizard Shard: Two-Hande Weapon, Impact Amplifier	71%
Rebirth Scroll, Jetpack, E-Repair, E-Protect, Advanced Soul Catalyst, Growth Potion Supreme, Stamina Saver Deluxe, Galaxy Stone, Sealing Scroll: Weapon, Secret Feather of Teleportation,	29%

Relic Box of Peace

You can get it from  Curious Wooden Box. Opens with double click if you have a Clay Key of Peace(drops from monsters)

It contains:

Stamina Saver Deluxe, Teardrop Valor Stone (Enhanced), Teardrop Guardian Stone (Enhanced), Teardrop Precision Stone (Enhanced), Teardrop Spry Stone (Enhanced), Teardrop Wizard Stone (Enhanced), Teardrop Perception Stone (Enhanced), Teardrop Crush Stone(Enhanced), Teardrop Pierce Stone(Enhanced), Teardrop Escutcheon Stone(Enhanced)	24.15%
Teardrop Annihilation Stone (Enhanced), Teardrop Pinpoint Stone (Enhanced), Teardrop Mindwall Stone (Enhanced), Teardrop Blur Stone (Enhanced), Deva's Blessing	15.85%
Rebirth Scroll, E-Repair, Tortoise's Soul, E-Protect, Advanced Soul Catalyst, Growth Potion Supreme, Secret Feather of Teleportation, Impact Amplifier, Deva's Blessing	60%

Relic Box of Sharpness

You can get it from  Curious Wooden Box. Opens with double click if you have a Clay Key of Sharpness(drops from monsters)

It contains:

Rebirth Scroll, E-Repair, Tortoise's Soul, Advanced Soul Catalyst, E-Protect, Growth Potion Supreme, Stamina Saver Deluxe, Deva's Blessing, Sealing Scroll: Weapon, Feather of Teleportation

100%