Solution:
I think this puzzle was pretty easy but apparently one of the GAs was harder to find than the other 2 so here's how the GAs were hidden in the order they were hidden in the screenshots. I'm a complete puzzle noob so I only used 2 basic techniques: Hiding GA codes in pictures and mouse over text. Mouse over text was not really necessary to find all 3 but it provided some helpful hints.

First GA: Super Meat Boy: The GA code was hidden in the first screenshot with the Uncharted reference in the Echo description as the Case Nยฐ. This one was the hard one to find because apparently the font blended well with the original Echo description. The mouse over text gave a hint that the 2nd letter was a lower case L not an I.
L like in Uncharted - Seriously it's a lower case L

Second GA: Call of Juarezยฎ Gunslinger: The GA code was hidden in the second screenshot at the bottom on the whiteboard.
Letters from a loved one

Third GA: The GA was hidden in the fourth screenshot with the Grow Home boardgame on the whiteboard.
Board games are fun for the whole family. Just try not to hurt anybody ;)

The mouse over text of the GIF pointed out that there's 3 GAs to find so you don't keep searching after you've found all 3.

Thank you to everybody who participated and I hope you had fun :D

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7 years ago*

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bump

7 years ago
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Bump solved nice job

7 years ago
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bimp

7 years ago
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bump

7 years ago
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Bump Bump Bump!

7 years ago
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badabumpskiroo!

7 years ago
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Bump :)

7 years ago
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Bump!

7 years ago
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Bumpy :>

7 years ago
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7 years ago*
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Bumperino!

7 years ago
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Closed 7 years ago by Sundance85.