Watcher Chronicles offers to control the dead knight. After death, his soul went to purgatory. The Guardian of this dimension instructed this warrior to destroy the Observers. This is the name of the fallen angels who decided to take over this place and turn it into a branch of hell. Bits of lore can be learned from conversations with various NPCs. A warrior can walk left and right, jump, roll, place blocks, deliver weak and strong blows, cast spells, shoot, and heal with potions. The number of healing potions is limited, but their contents can be restored. There are many different weapons – from a giant sword to a scythe. Using a specific type of item changes the character's fighting style. There are a total of 100 types of weapons, rings and armor. Equipment can be improved.

It's an action RPG with 2D cartoon graphics, a side-mounted camera and metroidvania elements. The Observer Chronicles project is positioned by the developers as a spiritual successor to Dark Souls, but in 2D. There are also semblances of souls and fires here. The main character can farm purple stones and rest near the altars. They can upgrade a fighter by increasing his 4 characteristics. Attacking increases damage, health increases your HP bar, stamina is consumed by acrobatic moves and performing melee moves, and energy is consumed by casting spells and firing ranged weapons. The absence of a class system allows users to come up with their own builds. As in the DS, the adventurer will have to die quite often here.