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William and Sly

rated 4.44 / 5 stars
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Action - Platformer - Other

Credits & Info

Jul 17, 2009 | 3:03 PM EDT
  • Frontpaged July 17, 2009
  • Daily Feature July 17, 2009
  • Weekly 2nd Place July 21, 2009

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Flight 5 Points Find the wings.
Weather Mage 5 Points Turn off the rain.
Dominus Lux 10 Points Slay five darklings.
Deviation 25 Points Unlock all boxes and switches.
Resolution 25 Points Complete the game.
Sensitive Nose 50 Points Find all of the mushrooms.
Sly Fox 100 Points Earn more than 35,000 points.

Author Comments

JAN 30, 2016
Hey guys, I’ve started work on a possible William and Sly 3. Follow me on facebook for updates!


This is probably my best game to date. I wanted to make something more accessible, as most of my flash games have been too complicated for my family to play. :3

I really hope you guys enjoy it, I think it's the most effort I've put in to anything. A big thanks to everyone who helped me test, and Tom and NG for the sponsorship!

As always, leave a comment! I love reading them.

EDIT: The game has version detection, but YOU NEED FLASH 10 to play it. If you have trouble loading the game, please send me a PM with the details.

EDIT: Because nearly everyone is saying they can't figure out the boss's pattern, I've made a slight change that should make it more obvious. Once the game update is approved I'll let you guys know and you can try again with the new pattern. *Alright it's up now*

If you're getting a black screen after the Newgrounds and Particlasm screens this applies to you. This might also help with the loading bar freezing. This was posted by a Kongregate user (thanks Knork):

"If the game does not load past the ads make sure that and are not being blocked in your hosts file. Which is located under C:\WINDOWS\system32\drive rs\etc
If they are, uncheck the "Read-only" attribute and edit out those two lines."

If this works for you let me know.



Rated 5 / 5 stars

Purple Four Swords Link from camp:FABUUULOOOOOUUUS

It's awesome! it..was...EPIC!!!!!well beautifully epicly awesomely..........uhhh....FUN!!!i liked da graphics and the guy i think william is nice cause he calls the fox i think is sly buddy and that shows 91347 (tried to do "great" wid numbers) relationship between the 2. the boss i didnt get at first but when i found out that fairyflys were in the storage i found out what 2 do. oh and wen you need fairyflys teleport to house or anywhere where there are no enemies and move around and fairyflys might pop out.they come randomly where the screen cant see. its a useful technique hope it helps :D


Rated 5 / 5 stars


Its laggy 4 u cuz u dont have flash. Its perfect for me. Its graceful and smooth


Rated 5 / 5 stars


Nice graphics, nice gameplay, nice everything!
5/5 10/10

(I got the wings, theyre badass!)


Rated 5 / 5 stars

One of the best!

I think this is probably one of the best games of newgrounds, i like the fact you can't lose life when you make a big jump or missed a platform.
I wanted to play further, to collect the rest of the mushrooms, but I wasn't able to do that anymore, but for the rest this is a fun game, good job man!

This game is real cool!


Rated 5 / 5 stars

ADventure filled

Really fdun game, the hills seem almost never ending