Update 30/12/19
There are now 11 ranks in this pack.
Rose - Named after Amy Rose, nice and relaxed difficulty level like Team Rose was in Sonic Heroes, mostly X of everything levels but it's not overly generous (first difficulty rank, 20 levels)
Shield - Still shielded from tougher levels and have plentiful skillsets to hand. (second difficulty rank, 20 levels)
Ring - Onto the easier puzzle type levels and earn those rings! (third difficulty rank, 20 levels)
Sneaker - Getting more difficult, get those Super Sneakers on and carry on, Gotta Go FAST! (fourth difficulty rank, 20 levels)
Emerald - About as difficult as getting actual emeralds in the Sonic games (fifth difficulty rank, 20 levels)
Super Sonic - You have all the Emeralds now, time to morph into Super Sonic (sixth difficulty rank, 20 levels)
Chilli Dog - You have fought hard, you have beaten some tough levels to get here, can you finish the job and earn the Chilli Dog! (seventh and final difficulty rank, 20 levels)
Encore - A Flopsy/Wafflem collaboration ENCORE! With some levels from other special guests! (a collaboration rank, 20 levels)
Competition - A rank for contest level entries, named after the multiplayer mode for Sonic 3 (about 15-20 levels)
Special Stage - A rank for some special levels with a recurring theme hence Special Stages (10 levels)
SEBSegaBytes - Some returning classics from SEB Lems and MegSEGAbytes (repeat levels from previous packs, 20 levels)
There are 20 main tilesets in use for Gotta Go Fast and I am trying to get one of each tileset for each rank as hard as this sounds, I'm doing ok at the moment.
Rose 12/20
Shield 12/20
Ring 16/20
Sneaker 12/20
Emerald 12/20
Super Sonic 15/20
Chilli Dog 14/20
Encore 15/20
Competition 13/15
Special Stage 10/10
Encore 20/20
Total 151/205
Over 2 years in the making now and we are closing in on the end now

Update 21/10/19
This pack is back on track now and I have just crossed the 120 level mark (excluding the SEBSEGAbytes rank which consists of returning levels from previous packs).
A 9th rank has been added to the pack also, the Shield rank has been added between Rose and Ring, this is to strengthen the amount of easier levels in the pack to be more friendly to newer players.
I have removed the images that were in this topic before because some levels have been removed from the pack and put into another project I have in the pipeline. More details will be revealed at a later date

Update 22/01/19
I have rank names for Gotta Go Fast at last.
Rose - Named after Amy Rose, nice and relaxed difficulty level like Team Rose was in Sonic Heroes, mostly X of everything levels but it's not overly generous (first difficulty rank, 20 levels)
Shield - Still shielded from tougher levels and have plentiful skillsets to hand. (second difficulty rank, 20 levels)
Ring - Onto the easier puzzle type levels and earn those rings! (third difficulty rank, 20 levels)
Sneaker - Getting more difficult, get those Super Sneakers on and carry on, Gotta Go FAST! (fourth difficulty rank, 20 levels)
Emerald - About as difficult as getting actual emeralds in the Sonic games (fifth difficulty rank, 20 levels)
Super Sonic - You have all the Emeralds now, time to morph into Super Sonic (sixth difficulty rank, 20 levels)
Chilli Dog - You have fought hard, you have beaten some tough levels to get here, can you finish the job and earn the Chilli Dog! (seventh and final difficulty rank, 20 levels)
SEBSegaBytes - Some returning classics from SEB Lems and MegSEGAbytes (repeat levels from previous packs, 20 levels)
Encore - A Flopsy/Wafflem collaboration ENCORE! With some levels from other special guests! (a collaboration rank, 20 levels)
And lastly, a flagship new tileset to add to the mix. For the first time ever, the new
Chemical Plant tileset!
Full CircleThanks to GigaLem for helping me finish this tileset, the teleporter actually sucks the lemming through the tube. Credit to GigaLem for all the great objects in this tileset!
Also thanks to Nessy and Wafflem for the help with testing the levels in this pack, it is going really well so far

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(Original post)
This pack has been in development since shortly after the completion of SEB Lems and I've been mentioning this pack time and time again in the IRC so I thought it was time to formally announce it now that I have a name for the pack which I'm happy with.
So the gimmick in this pack is I will only be using SEGA themed or Sonic themed tilesets so the rule is I only use the following tilesets
Scrap Brain, Star Light, Marble Garden, Casino Night, Mystic Cave, Death Egg, Labyrinth, Sandopolis, Green Hill, Launch Base, Press Garden, Hydrocity and Studiopolis (plus other possible new tilesets by myself -
see below).
I will be using some returning levels from SEB Lems as well as some levels which are also in the upcoming collab pack MegSEGAbytes, I feel that due to the theme of this level pack, I feel like it is a collection of levels which use these tilesets in particular so I feel reusing the levels from other packs is relevant.
I have an initial target of 100 levels for this pack but knowing what happened with my previous pack SEB Lems, I had a target of 120 levels there and ended up with 175 levels so the 100 target on this pack may well be exceeded by up to 50%.
As of right now I have 45 levels already including possible inclusions from SEB Lems and MegSEGAbytes.
I have no idea about rank names or how many ranks the pack will have either. I will probably stick with the SEB Lems theme and have 20 levels per rank though when I do decide on the ranks
