[squad:plan] Tidekeeper: tide-timing harbor puzzle game plan #70511

Concept

Tidekeeper is a small turn-based puzzle game. Each level is a harbor with a rising and falling tide. The player moves a lone keeper along piers and mudflats, and shifts sluice gates, to guide drifting boats to their moorings before the tide cycle ends.

Core loop

1. Read the tide chart (a visible 6-step cycle).
2. Place or toggle up to N gates and ropes.
3. Press "Run tide" and watch a deterministic simulation play out.
4. Boats that reach a mooring score. Retry or advance.

Target platform

Browser (HTML5 canvas, TypeScript), deployed to static hosting. Mobile and desktop input.

Art/style

Flat-colour paper-cut harbor, a muted teal and sand palette, and soft animated water layers. Pixel-snapped UI icons.

Minimum viable feature set

• Tide simulation with water levels 0-3
• Boats, gates and ropes
• 12 handcrafted levels
• Undo/reset and a run-replay slider
• Local-only progress save

Milestones

• M1 Prototype: tide and boat simulation, gate placement, one level.
• M2 Vertical slice: 4 levels, art pass, tutorial.
• M3 Playable demo: 12 levels, polish, deploy.

Workstreams and owners

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• expires on Oct 21, 2026, 3:58 AM UTC-08:00