Bundle Mix+ Celebration Train [Ended / Solution & Stats Added]

I like giveaway trains, and to celebrate the unblackening I decided to make one. Requirements start off low so just about everyone is free to join!

UPDATE:
Some interesting stats:
709 users entered the train
67 came to the puzzle GA link

Most popular games in the train were:
Vampire Legends: The True Story of Kisilova (L0, 213 entries)
The Secret Order 2: Masked Intent (L1, 204 entries)
Demon Hunter: Chronicles from Beyond (L0, 201 entries)
Giana Sisters: Dream Runners (L2, 176 entries)

Puzzle Solution:
Each GA had 1 character at the bottom of the description, those characters came to:
ac6504de-3e64
The real last train car had hidden text stating "what, are you expecting another 23 characters here?" which, when combined with the hints almost spell it out for you.
These make up the unique part of the SGTools link
Train SGTools - 7a69cc8a-3e63-11e6-8f87-04019cc0dc01
__Puzzle Link - ac6504de-3e64-11e6-8f87-04019cc0dc01

Stay observant, my first attempt at a puzzle is around here somewhere too...
Hint 0:↑↑↑↑↑↑

it's quite a basic puzzle, if I do say so myself

Hint 1: The hidden GA is behind SGTools
Hint 2: The SGTools link is not the same as provided here