By A small, atmospheric js13k coin-diving game · 2017
Play:
Touch: Drag the circle on the right side of the screen to steer, press the circle on the left side to dive · Keyboard: Arrow keys to steer, Down/Space to dive
About:
A js13k 2017 competition entry: steer a boat across a stylised sea and dive for lost coins. Built in 13KB with real-time WebGL shadow mapping. The touch joystick sits on the right side of the screen and the dive button on the left - verified working by reading live boat velocity, position, and dive depth before and after touch input.
Credits:
Made by A small, atmospheric js13k coin-diving game, 2017. Published here under the Unlicense licence.
Source code.
Phone check: 2026-09-07: played on simulated phone (390x844, real CDP touch dispatch) and desktop (arrow keys); confirmed the right-side joystick and left-side dive button both change live player.v/matrix/depth state correctly. Noted (but did not fix) a benign 'preventDefault on passive listener' console warning on every touch.