if you could summon anything from a game in real life...

[Nicragomi]

a BFG...

Just so I can show up at Dwayne Johnson's house and knock on the door and go "You Sucked in Doom!" and shoot him with it.

 

[Vrex360]

An entire Sangheili armada... because they are awesome, nothing can stand before the might of the magnificant Sangheili. Oh and also some Asari because I have a thing for the foxy blue ladies.

 

[Tartarga]

I summon Bahamut!