WE ARE TRIBUTARY.
We make social, novel games with innovative mechanics and rich narratives.
We're a fully remote game studio with team members in the UK. Our debut, KING OF THE CASTLE, was released in early 2023 with Team17.
We then released OCCLUDE in 2025 with Pantaloon and re-launched OVER THE ALPS in 2026 with new content.
Spies, stamps and goats!
Tributary are the custodians of Over the Alps, a text adventure spy thriller set at the outbreak of World War Two.
Discover replayable stories that change as you make decisions, with multiple endings and secret stamps to be discovered.
Inspired by vintage travel posters, discover sweeping landscapes of beautifully-rendered Swiss scenery.
The police are hot on your heels. Stay on the move to remain one step ahead of the law!
The lost, restored final chapter, The Devil’s Quill, available for free to play on itch.io
The past can be rewritten.
You just have to play your cards right.
Occlude is a ritual disguised as Solitaire; a cosmic-horror card game where the rules are obscured and reality is at stake. Play through cryptic challenges to reveal forbidden lore in this singleplayer narrative puzzle game for the terminally curious. Don’t worry; you can always start over.
Take your throne in King of the Castle!
Steer your Kingdom through bloodshed, intrigue and madcap disaster in this multiplayer narrative game.
You play the Monarch and your friends or audience play the scheming Council of Nobles who can vote on your every decision!
Play on Twitch: In Streamer Mode, King of the Castle is fully integrated with the Twitch API, enabling Twitch streamers to easily involve their viewers in the game.
Play with friends: In Browser Mode, your friends can join your game as Nobles and vote on your decisions through their web browser on mobile or desktop.