Portal 2 isn’t the biggest game around – it has a length of 6-8 hours, which some fans were initially disappointed by (compare it to HL2’s length of 10-15 hours). But by and large, P2 is a pretty huge game, considering its puzzle game heritage, and especially when it is compared to its 2007 predecessor, which barely clocked in at 4 hours.

And it has such an intricate game structure, that the average player is likely to miss many aspects, and perhaps hidden details of the experience, on… well, just about every playthrough he embarks upon.

But as it turns out, there is a way to see exactly what makes Portal 2 tick. Read on!