This can be any game. Even ones that has no chance of being made, but as long as it makes you explode with happiness it is acceptable.

For me the game that would make my day would be a Star Fox Metroid crossover game. I actually heard a rumor about this like a year ago and I thought it would be a cool concept with some interesting gameplay mechanics.

So yeah, leave a commet saying what game would make your day if it was announced at this E3 or at any other time.

Fallout 4 ...

Most of my favorite franchises already have games coming out for them, KH3, FFXV, MGSV, Tales of Xillia 2/Zestiria, etc.  I want a new IP to come out and blow me away. 

SchoolMate 3 from illusion
Custom Maid 3d-2 from Kiss
Metroid U, Zelda U, F-Zero U

A proper D&D game for the Wii U that uses asymetric gameplay to emulate the dungeonmaster position.

PS4:

The Last Guardian
Demon's souls 2 / Project beast?!
Little big planet 3D
Persona 5 port.
Atelier collection HD
new ips.

Xbox one:

Banjo Kazooei HD or sequel
Perfect Dark HD or sequel
Killer instinct complete.


Nintendo WiiU:

ZeldaU
Metroid U
F-zero-U


Vita:
Persona collection( 1 +2(IS + EP) + 3(FES+ P3P))
infamous vita;

Shining force 4!!!!!!!

KOTOR 3 ... or Gothic 5

Killer7 HD.

Lost Odyssey 2