My name is Emily, and this is my guide and ongoing project about all of the Neopian Wheels. I know that Jellyneo already has guides about each Neopian Wheel, but they only give a short summary of what they do. This guide will have a much more indepth look at not only what each space does, but also a list of prizes and, most importantly, the probability of landing on each space!
Have you ever wondered how long it'll take you to earn the wheel avatar? Or why you always land on the question mark? It's all based on probability  the chance of a certain outcome happening. And I'm going to find the probability of each outcome on each wheel.
How?!
Well, first, I'll need a lot of sample data. I'll be posting a thread on the Help Chat often. It will look like this:
If you see a post like this, please, click and help out! I will read the results/items won/etc. from each person that posts, and record them on both a Word document and in my reallife notebook.
Once I get a sufficient amount of data (say, 500 total spins), I'll calculate the percent chance of someone landing on each space by taking the times landed and divide it by the total times spun. For example, if I landed on a space 350 out of the 500 time I spun, the odds of me landing on it are 350/500, or 70%.
I'll also be recording what items are won from each space on the wheel. If you won an item from a wheel space that's not listed here, please neomail me!
BUT WAIT!!
A kind user has notified me that the probability of each wheel (or at least, the Wheel of Excitement) varies! This user, hardwireengineer, says that it differs every day of the week; depending on the month and hour of the day, a computer does 1 of 2 randomization algorithms based on whether the month/day is odd or even.
Now, you may think that this completely ruins my project, but really, it doesn't. Think about it: if I took these algorithms into account, it would be impossible to record data for every single hour of every single month  or at least, it would take a long, long time. And if I did somehow record EVERY single possibility and figured out what time slot did what, people would use this guide to figure out the best time to spin, and therefore unbalance the game.
This guide isn't meant to be a cheat sheet. It's meant to be a simple guide for the average, everyday spinner, to give them a basic idea of how often they'll land on each space, and how many spins it'll take to get the results they want. So for the interest of fairness (and for the sake of my sanity), the randomization algorithms will NOT be taken into account.
Anyway, enough of that hooha! Let's move on to the wheels!
Wheel of Excitement 
Click here to spin this wheel!
This is the first wheel I collected data for.
Summary:
The Wheel of Excitement may sound like a thrill, but most of the time, you know what you're going to get. Odds are, you'll either land on the Question Mark, 500 NP space, or  if you're having a good day  2,500 NP. If you're spinning for the avatar, you'll need to have a lot of patience; only eight lucky people landed on the 20,000 NP space out of the 1000 spins I've recorded.
This has always been my favorite wheel (oooh, pretty colors!), but if you're looking to make NP, it's really a tossup. You can win some cheap morphing potions and faeries from this wheel, and you may have your Neopets cured or plagued, but landing on one of these is a much rarer occurrence. You can earn 2,000 NP profit by landing on the 2,500 space, though, so the decision is really up to you.
Total spins (so far): 1000/1000.
Data completed 2/2/2014. :) Thanks to everyone who contributed!
For your convenience, the following results are ordered from highest probability to lowest. ;)
Symbol  Result  Probability 
Question Mark 
You win a mystery amount of NP: it's always between 100 and 350 NP. (Net loss: 150400 NP) 
333/1000 spins (about 33%)
Odds of landing (approx.): 
500 
You win 500 NP. (Net gain: 0 NP) 
210/1000 spins (21%)
Odds of landing (approx.): 
2,500 
You win 2,500 NP. (Net gain: 2,000 NP) 
149/1000 spins (about 15%)
Odds of landing (approx.): 
Heal (blue bottle with leaves) 
All pets are fully healed. 
34/1000 spins (about 3%)
Odds of landing (approx.): 
400 
You win 400 NP. (net loss: 100 NP) 
34/1000 spins (about 3%)
Odds of landing (approx.): 
Lava Ghoul 
All pets lose 2/3 of their HP. (ex. pet with 9/9 HP goes down to 3/9 HP.) 
32/1000 spins (about 3%)
Odds of landing (approx.): 
Pant Devil 
The Pant Devil steals an item from your inventory. 
30/1000 spins (3%)
Odds of landing (approx.): 
Magic Item (Pink bottle with sparkles) 
You win a random magic item. Basically, you can win any cheap Magic Item, including morphing potions and bottled faeries. If you want a more exact list, though, here's all of the items participants won by landing on this space:
What else can you win from this space? Neomail me. 
27/1000 spins (about 3%)
Odds of landing (approx.): 
1,000 
You win 1,000 NP. (Net gain: 500 NP) 
26/1000 spins (about 3%)
Odds of landing (approx.): 
Dark Faerie 
One of your active Neopet's abilities is lowered by one level. NOTE: This was made for the old Battledome abilities. When Battledome 2.0 was released, a new abilities system was released, and the old version was disabled. Unless TNT changes it in the future, this space will not work. 
26/1000 spins (about 3%)
Odds of landing (approx.): 
The Dreaded Skull (or just "Skull", for short) 
Your Active Neopet becomes sick with Chickaroo. Got a different disease from this space? Neomail me. 
25/1000 spins (2.5%)
Odds of landing (approx.): 
Lightning Bolt 
Active Neopet loses 1/2 of their HP. (Ex. Active pet with 10/10 HP goes down to 5/10 HP.) 
24/1000 spins (about 2%)
Odds of landing (approx.): 
5,000 
You win 5,000 NP. (net gain: 4,500 NP) 
20/1000 spins (2%)
Odds of landing (approx.): 
Mystery (Lock and Key) 
. "Something mysterious happens to you and your pets... you are not sure what it is, however..." . ...So, in other words, nothing. :/ 
19/1000 spins (about 2%)
Odds of landing (approx.): 
20,000 NP 
You win 20,000 NP! (net gain: 19,500 NP)
If it's your first time landing on this space, you also earn the Wheel of Excitement avatar! 
8/1000 spins (about 0.8%)
Odds of landing (approx.): 
Light Faerie 
One of your Active Neopet's abilities is increased by one level. NOTE: This was made for the old Battledome abilities. When Battledome 2.0 was released, a new abilities system was released, and the old version was disabled. Unless TNT changes it in the future, this space will not work. 
3/1000 spins (about 0.3%)
Odds of landing (approx.): 
.
Top 5:
#1: Question Mark:
333/1000 spins (about 33%)
There is about a 1 in 3 chance of landing on this space.
#2: 500 NP
210/1000 spins (21%)
There is about a 1 in 5 chance of landing on this space.
#3: 2,500 NP
149/1000 spins (about 15%)
There is about a 1 in 7 chance of landing on this space.
#4 and #5: Full Heal and 400 NP
34/1000 spins (about 3%)
There is about a 1 in 29 chance of landing on each of these spaces.
AVATAR: 20,000 NP
8/1000 spins (about 0.8%)
There is about a 1 in 125 chance of landing on this space.
.
Wheel of Mediocrity 
Click here to spin this wheel!
This is the second wheel I'm collecting data for.
Total spins (so far): 272/1000.
Note: Until I reach 1000 spins, the percentages may be inaccurate. Check back often and help contribute, if you can.
Symbol  Result  Probability 
Red Grarrl 
A Grarrl comes up and roars at your Neopet! Rude, maybe, but otherwise, nothing happens. *shrug* 
13/272 spins (about 5%)
Odds of landing (approx.): 
4,000 
You win 4,000 NP! (Net gain: 3,900 NP)
If it's your first time landing on it, you'll also earn the Mediocrity avatar! :) 
11/272 spins (about 4%)
Odds of landing (approx.): 
Aisha Skull 
One of your pets' abilities is lowered by one level. NOTE: This was made for the old Battledome abilities. When Battledome 2.0 was released, a new abilities system was released, and the old version was disabled. Unless TNT changes it in the future, this space will not work. 
0/272 spins (N/A)
Odds of landing (approx.): 
200 
You win 200 NP. (Net gain: 100 NP) 
18/272 spins (about 7%)
Odds of landing (approx.): 
Tar Pit 
You lose an item from your inventory to the tar pit. How unfortunate. 
1/272 spins (about 0.3%)
Odds of landing (approx.): 
Earth Faerie 
One of your pets' abilities is raised by one level. NOTE: This was made for the old Battledome abilities. When Battledome 2.0 was released, a new abilities system was released, and the old version was disabled. Unless TNT changes it in the future, this space will not work. 
0/272 spins (N/A)
Odds of landing (approx.): 
2,000 
You win 2,000 NP! (Net gain: 1,900 NP) 
33/272 spins (about 12%)
Odds of landing (approx.): 
Pterodactyl (May the butchered spelling begin!) 
A pterodactyl swoops down and bites your active pet (Ruuuude!). Your active pet loses 1/2 of their current HP. (Ex. pet with 100/100 NP goes down to 50/100 HP, pet with 50/100 HP goes down to 25/100 HP, and so on.) 
21/272 spins (about 8%)
Odds of landing (approx.): 
Tyrannian Furniture 
You win a random Tyrannian Furniture Item. For a more exact list, here's all the items that participants have won (so far) by landing on this space:
(Won anything else from this space? Neomail me.) 
3/272 spins (about 1%)
Odds of landing (approx.): 
100 
You win 100 NP. (Net gain: 0 NP) 
21/272 spins (about 8%)
Odds of landing (approx.): 
Airax 
You win a random Tyrannian Petpet. NOTE: you cannot win Krawk petpets from the Wheel of Mediocrity. :( Talk about mediocre! Here are the petpets that my participants have won, though:
(What else can you win from this space? Neomail me.) 
7/272 spins (about 3%)
Odds of landing (approx.): 
Fossil 
You win a random Tyrannian Food. For a more exact list, here's all the items that participants have won (so far) by landing on this space:
What else can you win from this space? Neomail me. 
26/272 spins (about 10%)
Odds of landing (approx.): 
500 
You win 500 NP. (Net gain: 400 NP) 
56/272 spins (about 21%)
Odds of landing (approx.): 
Obelisk 
. "You feel a strange desire to visit the Obelisk...nothing else happens, however." . Fun Fact: This refers to an old obelisk that used to reside in the Tyrannian Jungle, but was removed and replaced with this wheel. The obelisk was later reincarnated into the Tyrannian Battleground in Y15. 
7/272 spins (about 3%)
Odds of landing (approx.): 
Fireballs 
Fireballs rain down on ALL of your Neopets, and they lose half of their current HP. (Ex. pet with 100/100 NP goes down to 50/100 HP, pet with 50/100 HP goes down to 25/100 HP, and so on.) Note: Scorchios and Firepainted pets are immune to this space. 0_0 
27/272 spins (about 10%)
Odds of landing (approx.): 
1,000 
You win 1,000 NP. (Net gain: 900 NP) 
28/272 spins (about 10%)
Odds of landing (approx.): 
The highest probability is the 500 NP space, standing at about 21%. Participants landed on this space 56 out of the 272 times spun. This means that there is about a 1 in 5 chance of landing on this space.
The second highest probability is the 2,000 NP space, standing at about 12%. Participants landed on theis space 33 out of the 272 times spun. This means that there is about a 1 in 8 chance of landing on each space.
The space that gets you the avatar is the 4,000 NP space, whose probability is at about 4%. Participants landed on this space 11 out of the 272 times spun. This means that there is about a 1 in 25 chance of landing on this space.
The lowest RECORDED probability is the Tar Pit space, standing at about 0.3%. Participants landed on this space 1 out of the 272 times spun. This means that there is about a 1 in 272 chance of landing on this space.
The spaces with no recorded data yet are the Aisha Skull and Earth Faerie spaces.
.
Last updated: 4/13/2014 @ 11:46 AM NST
Wheel of Knowledge 
Click here to spin this wheel!
This is the third wheel I will collect data for.
Total spins (so far): /1000.
Note: I won't start publicly collecting data for this wheel until my Wheel of Mediocrity data is complete.
Symbol  Result  Probability 
Brightvale Job Coupon (Green Scroll) 
You win a random Brightvale Job Coupon!  0/0 spins (N/A) 
Brightvale Fruit (A Tangella, to be exact) 
You win a random Brightvale Fruit or Healthy Food. (All of the prizes from this space are r95 and under.) For a more exact list, here's all the items that participants have won (so far) by landing on this space:

0/0 spins (N/A) 
Angry Hagan 
Your active pet's intelligence decreases. (By how much? Neomail me.)  0/0 spins (N/A) 
Book 
You win a random book. For a more exact list, here's all the items that participants have won (so far) by landing on this space:

0/0 spins (N/A) 
Window 
You win a random Brightvale Window. For a more exact list, here's all the items that participants have won (so far) by landing on this space:

0/0 spins (N/A) 
Red Scroll 
You win a random Brightvale Scroll. For a more exact list, here's all the items that participants have won (so far) by landing on this space:

0/0 spins (N/A) 
Brightvale Guard 
You win a Brightvale Guard Plushie.

0/0 spins (N/A) 
Light Bulb 
Your active pet's intelligence increases. (By how much? Neomail Me.)  0/0 spins (N/A) 
Question Mark 
You get a random "Did you know?" fact. If you're a newbie, they're pretty helpful, but otherwise this space is pretty useless. Here's a list of them below:

0/0 spins (N/A) 
Water Faerie 
Your active neopet is healed to full HP. If your neopet is already at full HP, she will say, "Good job taking such good care of your neopet!" 
0/0 spins (N/A) 
Star 
Ah, the most soughtafter prize of the Wheel of Knowledge! Landing on this space earns you the Brightvale avatar!

0/0 spins (N/A) 
Arrow 
You win a free spin. Click the X on the popup window and click the wheel to spin again, free of charge!  0/0 spins (N/A) 
Happy King Hagan 
You get a wise and clever saying from King Hagan. You may feel more enlightened afterwards, but you don't win anything tangible from this space. Here's a list of the phrases King Hagan has been known to say:

0/0 spins (N/A) 
Mote 
You win a random mote. For a more exact list, here's all the items that participants have won (so far) by landing on this space:

0/0 spins (N/A) 
Usul 
You win a Brightvale Usuki Doll.

0/0 spins (N/A) 
Shield 
You win a random shield. For a more exact list, here's all the items that can be won by landing on this space:

0/0 spins (N/A) 
.
Other wheels coming soon...
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