VGFacts

So I've recently been addicted to Zero Escape on my Vita and I noticed it references certain things like Metal Gear and Dragon Ball Z.

In the recreation room when examining the billboard poster Sigma will say "What's this supposed to be a picture of?"to which Alice replies "They're those balls from that kid's show, right? If you collect seven of them then you get a wish." The show she mentions is clearly Dragon Ball.

Here are screenshots I took as proof:



In the control room when you examine the cardboard boxes Luna will just say they contain machinery. Now I don't what triggers this dialogue but it seems that I triggered each time I went on Easy and examined the boxes again, Phi will say that "Hmm... Maybe we can use one of those boxes to sneak past guards." which is clearly a nod to the famous cardboard box item in Metal Gear Solid series.

Proof:

Nice finds!