Purities are coming down to Hell to destroy everything you've ever known. Freshly out of Alchemy School, craft all sorts of powerful items, summon demons, make them evolve and defend your land.

Deckum Demonium fuses deckbuilder roguelikes, crafting mechanics and creature collector games, casting you in the role of a young alchemist from Hell fighting against merciless Purities.

Victory lies in your ingredients...

Craft demonic essences, brew potions or directly feed ingredients to your demons, you'll always find something to create with what's in your hand.

Real treasure is the friends we summoned along the way

Summon demons on the battlefield, make them gain experience and watch them evolve in stronger forms. Discover 150+ different demons and complete your Codex

Demons skills are all uniques, depending on their form, their affinities, their type. Combine them to develop different strategies

A world filled with priceless artefacts

Travel the world, meet a diverse cast of NPCs and unlock new ingredients, rare relics and terrifying Purities and bosses. Find the synergies that suit you the best and bring peace to Hell... Or go back to Pandemonium, rest and come back stronger.