Welcome to Lemmings: Gotta Go Fast! by Flopsy

Introduction

This pack is a very heavily Sonic themed pack with a Lemmings puzzle game theme, it is recomended that if special effects, Sonic nostalgia and gimmicks are not your thing then you do not play this pack.
There are 187 levels in the pack split over 7 difficulty ranks and 2 bonus ranks.
The 7 difficulty ranks contain 21 levels each, one for each of the main tilesets used in the pack.
The 2 bonus ranks contain 20 levels each, levels of any tilesets are used in this rank and there is not one of each here.

The ranks

We'll start with the 7 difficulty ranks, as above they all have 21 levels. The last level in each rank is defined as a boss stage and will have unique music.
Each of these ranks contains one each of the 21 main tilesets used in this pack.

Rose: This is the easiest rank in the pack and it is there to serve as an introduction to the different tilesets. Most of the levels will have X of everything skillsets.
Shield: The levels will start to get a bit more manic but largely remain as X of everything levels mostly with the occasional puzzle thrown in.
Ring: We now shift towards Puzzle style levels and the X of everything levels become much less common, unless X=1 of course :P.
Sneaker: The speed is largely getting up to running speed by this point, we are truely into the meat of the pack now and the difficulty is ramping up.
Emerald: Now we are truely heading into the harder levels in the pack, they are hard just like collecting the emeralds in the Sonic games!
Super Sonic: Now the levels are getting larger and much more complex, a lot more abstract thinking required here.
Chilli Dog: Here we are, the last hurrah! The pack doesn't get any harder than this! Can you get to the coveted Chilli Dog at the end of the pack?

and now the 2 bonus ranks, which contain 20 levels each. There is no one per tileset rule here and there is a mix of different levels.

Encore: An overflow rank of levels which didn't fit into the main ranks but were still awesome enough to include in the pack. Including a few collabs with other level creators!
Toolkit: This rank is a certain type of level which I felt belonged in its own rank so that if you don't want to play these types, just stay out of this rank. 
These are levels with large skillsets and require a large amount of thinking and resources to solve. I know some people don't like this level type so I chose to separate them out.
That's not to say the rest of the pack is entirely free of these "toolkit" type levels though!

Flopsy's Sonic tilesets

Scrap Brain (Sonic 1): The original and first Sonic tileset for NL, but it has received a makeover with additional animations.
Star Light (Sonic 1): Also has received an upgrade with special effects.
Marble Garden (Sonic 3): One of the grass terrain tilesets based on destroyed ruins, also features dirty water.
Casino Night (Sonic 2): That pinball zone everyone remembers from the Sonic series, complete with all the flashing lights to go with it.
Mystic Cave (Sonic 2): Probably remembered as that hard zone from the 2 player vs mode of Sonic 2.
Death Egg (Sonic & Knuckles): This is of the S&K version of the zone which is way more playable than the Sonic 2 version.
Sandopolis (Sonic & Knuckles): Something important to note in this tileset is the sandfalls are actually updrafts. Tha sand pools are still hazardous though.
Labyrinth (Sonic 1): That original maze zone from Sonic 1, expect to see a lot of water in these levels!
Chemical Plant (Sonic 2): The 2nd zone from Sonic 2, a very nostalgic zone for fans of the series.
Lava Reef (NEW) (Sonic & Knuckles): Possibly a Lemming's worst nightmare, a lava cave filled with heat and lava.
Spring Yard (NEW) (Sonic 1): Known as the pinball zone from Sonic 1, looks more like a pinball machine than Casino Night.
Marble Zone (NEW) (Sonic 1): Kind of similar to Marble Garden zone but different colour scheme and Lava to boot.
Hill Top (NEW) (Sonic 2): A grass high altitude zone with underground caves too and Lava.
Oil Ocean (NEW) (Sonic 2): An oil rig zone with Oil all over the place.
Metropolis (NEW) (Sonic 2): A zone full of machinery and gears, like Scrap Brain but more colourful.
Ice Cap (NEW) (Sonic 3): The last tileset to be made for the pack, filled in a severe lack of colder environment tilesets in the void.

Guest Tilesets

Hydrocity (Sonic 3) (by Nessy): The iconic Water world from Sonic 3, similar to Labyrinth zone but less water.
Studiopolis (Sonic Mania) (by Plom): The iconic Hollywood zone from Sonic Mania is brought to life in this pack courtesy of Plom.
Press Garden (Sonic Mania) (by Plom): The newspaper press zone from Sonic Mania also puts in an appearance.
Green Hill (Sonic 1) (by GigaLem): The zone which started the entire series, a must for Gotta Go Fast.
Launch Base (Sonic 3) (by TimFoxxy and GigaLem): The final zone in the Sonic 3 arc.

Additional Remarks

This pack uses no effect trigger objects, this is to try and ensure that the Lemmings engine tries to imitate a Sonic game as much as possible without going overboard.
For this reason, please do not complain about their use in the pack, please instead "Disable Background Objects" which is found in Config.
I have tried hard to make the tilesets as welcoming as possible to newer players but there is only so far I can go with that and I want to try and keep the nostalgia balance in the pack as well.


Credits

Scrap Brain, Star Light, Marble Garden, Casino Night, Mystic Cave, Death Egg, Sandopolis by Flopsy plus additional entrance/exits by GigaLem
Labyrinth, Chemical Plant by GigaLem, tiles provided by Flopsy.
Lava Reef, Spring Yard, Marble Zone, Hill Top, Oil Ocean, Metropolis_S2 and Ice Cap by Flopsy
Hydrocity by Nessy
Studiopolis, Press Garden by Plom
Green Hill by GigaLem
Launch Base by TimFoxxy and GigaLem
Nessy for the modified Lemming sprites.
NoToDo for Sonic3sprite, Amy, Eggman, Metalsonic, Tails and Knuckles sprites.
Nessy (newer Sonic fan), namida (non-Sonic fan) and Wafflem (seasoned Sonic fan) for ongoing testing of the pack.
soniczone0.com for sourcing the tiles for pretty much all of the Sonic tilesets made by Flopsy.
NicoCW for ggf_marblegardenzoneremix track
Tee Lopes for ggf_springyardzoneremix and ggf_icecapteelopes track
Overshield for ggf_chemicalplantremix track (Chemical Burn)
Dr Reverbnik for a lot of the other remixes (Sonic Generation Classic/Modern mixes)
Project 13 for ggf_sss2remix
Hyper Shan for ggf_sss1s4remix
Jahn Davis for ggf_rubydelusionsremix
Yuzoboy for ggf_soniccdbossremix