Instructions are in-game!! This game is based of a iPad app called 'Spirit' by Marco Mazzoli. Shared on ultimate pi day 3.14.15!!! :D To pause, move your mouse out of the screen. Tip: the bigger the middle circle in the pulse is, the bigger the vortex.
All scripts and graphics are by me, @qwertyNG. If you have any bugs or suggestions the tell me in comments. Credit to @Zaptoe_Games & DJVI for the music (which is from Geometry Dash).