Kuroi Hitomi no Noah: Cielgris Fantasm plays mostly like traditional Japanese-style RPGs such as Breath of Fire: the protagonist travels on the map and interacts with various people, and in her travels, also encounters monsters that she must fight. The encounters are typical turn-based battles in which the player assigns actions to be performed by the party members. However, Noah has the ability to befriend monsters and can recruit them when they have been weakened. They can then be summoned in battle to fight alongside the party members. At the end of battle, the participating members and monsters gain experience points to increase their level.