Work-in-progress demo · 0.3.6
AAA Sewer King
Clear sewers with marbles. Upgrade, then take on the next well.
In-game text: Simplified Chinese only.
The first load downloads about 84 MB and may take a little while.

Hold the line at the well and fire marbles, bouncing them off the walls to clear monsters as they climb. Earn copper coins on each run, then return to the office to upgrade your knowledge tree and unlock more marbles, enchantments, and equipment. Push through three districts as the sewer water rises, then face the final boss in the deepest depths.
Some game assets were generated with AI.
How to play
Desktop controls
Aim with the mouse and hold the left button to keep firing. After purchasing the movement research, move with A/D or the left/right arrow keys. Press Esc or the pause button to open settings.
On the map and knowledge tree, click a facility or research node, drag to pan, and use the mouse wheel to zoom. On the map, hold the right button and drag horizontally to rotate.
Touch controls
Press and drag on the right half of the screen to aim. Firing starts automatically when you move away from the joystick center; release to stop. After unlocking movement, tap the direction buttons on the left to move. Outside combat, tap or drag with one finger and pinch with two fingers to zoom. Tap a knowledge node to read it, then tap again to research it.
The Web version has been tested in Windows Chrome. Touch controls were tested in the native version on an Android emulator; physical phone browsers have not been tested.
Your first run
After your first run, open the office and spend copper coins on permanent upgrades before heading back down. Being unable to move at the start is normal: movement unlocks through research.
Your save
Progress is saved in this browser and can be continued after a refresh. Saves are not shared between browsers or devices, or between the Web and native versions. Clearing site data or using private browsing may prevent progress from being retained.