Hammerwatch is a fast-paced hack and slash adventure game. It can be played alone or with friends, up to three people.

Ancient and mysterious Castle Hammerwatch, where a group of characters fight their way from floor to floor, to the very top of the castle. Thousands of monsters prevent the heroes from passing this path. Numerous puzzles require the heroes to find a solution. Secrets are waiting to be discovered. The ancient dragon awaits the heroes at the top. Heroes must not only kill the dragon, but also come back together.

The game includes a level editor which lets you build your own adventures or play levels created by other players.