Deepwatch

Keyboard shortcuts

Space or k
Play or pause
j and l
Back or forward 10 seconds
Left and right arrows
Back or forward 5 seconds
f
Fullscreen
m
Mute or unmute
Shift and < or >
Slower or faster
?
Show or hide this list

Bad Apple! but it's a smoke simulation

Sebastian Lague, 4 min, 167.9K views, Oct 26, 2025

Original title: Bad Apple!! but it's a smoke simulation

Show description

The white pixels in the original animation have been treated as solid cells (drawn in black), with a constant outwards force applied along the outline. Smoke is also gradually added in along the outline. Simulation explanation: https://www.youtube.com/watch?v=Q78wvrQ9xsU My other bad apple (using a particle-based fluid): https://www.youtube.com/watch?v=2Ni13dnAbSA Support my random experiments on Patreon: https://www.patreon.com/SebastianLague Credits: Music: https://www.youtube.com/watch?v=i41KoE0iMYU Animation by あにら (Anira). Specifically, I used this version: https://www.youtube.com/watch?v=FtutLA63Cp8 Subtitles: https://archive.org/details/bad-apple-resources

When you're done