Game Development Reference
In-Depth Information
Consortium, in section
Guideline 2.3 Seizures: Do not design content in a way that
is known to cause seizures
; there is a recommendation as follows:
"2.3.2 Three Flashes: Web pages do not contain anything that flashes more than
three times in any one second period ".
So all you need to do is check your flashing elements and slow them down if their
frame rate is higher than three per second. It will not affect the visual qualities of the
game; moreover, it can increase the level of comfort even for players without epi-
lepsy, because in reality nobody loves very fast flickers, as it looks annoying.
Another advice is to avoid moving fast and unexpectedly large portions of geometric
patterns, especially if they have contrasting graphics; for example, graphics based
on black and white stripes. Such elements can cause seizures too. There is another
potential problem with the regular geometric textures; if they consist of parallel lines,
there is a big chance for the moiré pattern to appear. This geometric effect always
looks very inappropriate and ugly.
You should implement such changes in your game if you have some problems with
flashing elements, or you should at least warn the player about the potential risk, by
placing a special message on the main screen menu.
