View source for Eye Sigil ARG/There Came an Echo

{{ArgHeader|arg=Eye Sigil ARG}}

'''There Came an Echo''' is a real-time strategy game with a heavy lean on voice controls developed by ''Iridium Studios'' and released on 24 Feb 2015.

The sigil was added to the game on release.

=Sigil=
The sigil is visible on the wall to the far right side of the level 5, near a point called Foxtrot 6.

[[File:There came an echo illustration.png]]

=Piece=
Datamining the sigil showed that its texture also has a [[:File:Equation.png|formulae]]. (TODO: people also saw it in-game at the Foxtrot 6 point, but how?)

Simplifying this formulae mathematically (substituting 2.71 for [[wikipedia:E (mathematical constant)|e]] and LN(-1)/&pi; for [[wikipedia:imaginary unit|i]]) gives <code>E I E I O</code>. This is the refrain to the children's song, "[[Wikipedia:Old MacDonald Had a Farm|Old MacDonald Had a Farm]]".

Saying the voice command ''Old McDonald Had a Farm'' while standing at the Foxtrot 6 points flicks the piece on the screen.

[[Image:TCAE.png|300px]]
==Discovery process notes==
The game has a bunch of easter eggs triggered by saying particular voice commands. In May 2015, three monts after the game release, the developer [http://steamcommunity.com/app/319740/discussions/0/523890528709999005/ posted the list] of the secret trigger lines including the screenshot of the sigil and a vague message about noone finding it.