Master Water Flow in Every Lock
Navigate canals with realistic physics and strategic resource management
Experience authentic canal lock mechanics where every drop counts. Plan your route, balance water levels, and guide your boat from highland lakes to the open sea.
Updated November 2026 with personal best tracking
Choose Your Starting Advantage
Select a bonus code to enhance your puzzle-solving journey
Instant Access Bonus
- Unlock all starter boats immediately
- Begin with expanded water reservoir
- Access to tutorial hints system
Summit Challenge Pack
- 50 extra drops for difficult routes
- Unlock dry season mode early
- Premium boat collection access
Professional Package
- 25 bonus drops per session
- Advanced statistics tracking
- Priority route unlocking
All bonuses available for new downloads. Codes valid through 13.11.2026. See app for complete terms.
What Makes This Puzzle Unique
Discover the innovative features that bring canal navigation to life on your device
Authentic Water Behavior
Watch water rush between chambers, slosh against walls, spill over gates, and carry objects downstream. The physics engine simulates real hydraulic principles.
Strategic Conservation
Your reservoir feeds every lock along the route. Waste water early and face empty chambers later. Plan ahead to reach port with supplies intact.
Progressive Obstacles
Navigate bridges too low for your funnel, sills too shallow for your keel, gates that overflow automatically, and siphons that activate on their own.
Complete Voyage
Journey from highland lakes over thirsty summits down to the sea. Each section introduces new challenges and mechanics to master.
Multiple Game Modes
Complete the main route, tackle dry season with limited supply, or wear the keeper cap and pass multiple boats before your reservoir runs dry.
Personal Records
Track your most efficient runs. Compare each attempt to your best water usage and see exactly where you improved or need refinement.
How the Lock System Works
Understanding the mechanics gives you mastery over every waterway
Core Puzzle Elements
- Open gates between chambers to equalize water levels before passage
- Monitor your limited reservoir supply displayed at the top of each level
- Time your gate operations as water flows follow realistic physics
- Account for tide mechanics that impose strict time constraints
- Navigate around or beneath fixed structures blocking your path
- Trigger or prevent siphons that activate based on water height
Reward Systems
- Earn drops through efficient water management and gentle lock operations
- Collect port stamps in your daybook as you complete each harbor stop
- Unlock new boats in the boatyard using accumulated drops
- Access progressively challenging route sections after mastering earlier locks
- Achieve better efficiency ratings by matching or beating your personal records
- Complete special challenges in keeper mode for additional rewards
About This Puzzle Experience
Brim Basin transforms the centuries-old engineering of canal locks into an engaging mobile puzzle. The game respects how water actually behaves while presenting increasingly complex scenarios that demand both planning and real-time adjustment.
Each lock teaches you something new. Early chambers establish the fundamentals of water equalization and gate timing. Later sections combine multiple challenges simultaneously, requiring you to balance speed, efficiency, and structural constraints.
Technical Foundation
Built for smooth performance and intuitive control on iOS devices
Optimized Water Simulation
The physics engine calculates water movement in real time without compromising frame rate. Whether you are watching a chamber fill slowly or seeing water rush through an opened gate, the fluid dynamics remain smooth and responsive. The simulation accounts for volume conservation, pressure differences, and gravity effects that make each lock feel authentic.
Intuitive Touch Controls
Every interaction happens through simple taps and holds. Touch a gate to open it, tap a siphon to activate manually, or hold to observe water levels before committing to an action. The interface stays out of your way while providing all necessary information about your current water supply and lock status.
Progressive Difficulty Architecture
The route structure introduces one new mechanic at a time, allowing you to master each element before combining them. Low bridges appear first, then shallow sills, then overflow gates, building your skills methodically. By the time you face the complete challenge of navigating tide-dependent harbors with limited water, you have practiced each component separately.
Verified Specifications
Begin Your Canal Journey
Available for iOS devices. Free download with optional in-app rewards. Average install time under 2 minutes on standard connections.
Download Brim BasinCompatible with iPhone and iPad. Rated for all ages. Contains optional in-app purchases for cosmetic boats and hints.