Black Rose Wars is a competitive fantasy game of deck-building, strategy, and combat set in the hectic universe of Nova Aetas. Each player is a powerful mage of the Black Rose Order who aspires to become the new Supreme Magister, in order to acquire the mighty power of the Black Rose Artifact and the Forgotten Magic. Each mage has six schools of magic at their disposal, each one with its own strategy to annihilate their opponents and increase their power.

Mages fight each other in a modular arena of hexagonal rooms. They summon powerful creatures, cast destructive spells, or devise dark deceptions with their enchantments. If they are killed, mages are "reborn" immediately, allowing them to re-enter the fight without delay, although their death still fed energy to those mages who caused it.

The mage with the most power at the end of the battle will be crowned Supreme Magister!