Electric and Magnetic Fields (E+B) of an EM Wave must be pi/2 radians (90 deg) out of phase:
The primary reason for this is Conservation of Mass/Energy. If the waves are in phase-or directly out of phase- as shown to be a correct waveform all over the internet, you get a graphs like the two in the top row of the below picture. (Tiny as hell, I know)

The red and blue lines represent the E and B fields, and the green lines represent the total energy which is proportional to the sum of the two fields after being squared (Energy = c1*E*E + c2*B*B).

The only way for energy to remain constant is if the two fields are offset by pi/2 radians, as shown in the graph at the bottom, where the green energy line is constant.

Obtained in Octave:
t=[0:.01:1];
w=10;
s1=sin(t*w);
s2=cos(t*w);
s3=s1.*s1+s2.*s2;
hold off;
plot(t,s1,'b');
hold on;
plot(t,s2,'r');
plot(t,s3,'g');

Pictures all over the Internet appear to glaze over this...
Incorrect Examples
This guy has more details if my graphs don't satisfy you:
Play-Hookey

I've definitely noticed over the years people who teach material I find out later to be wrong. Everyone makes mistakes but it disappoints me that this leads to widespread accepted misinformation...

Good News:
What I'll call 'Alpha Testing' has begun on my game. Soon after the most major problems are found (and fixed), I'll begin Beta Testing. Hoping for early March. Mostly just art is left... A lot of art.

Bad News:
I'll be getting my wisdom teeth out during my spring break, so there won't be much chance for me to work on the game during that time :/

300 miles per charge Tesla Model S

-Richie