[EDIT: Sorry for the wrong site! I published the site recently, but I thought that the site would be platformsandbox.yola.com, but instead, it turned up as platformsandbox.yolasite.
com. Sorry!]

Note: All comments will be responded to. Any doubts? Post it in the comments. I'm here 15/7 :D
-- Developers Open --
PM me to find out more.

-------- PlatformSandBox ---------
This game, is, as its name suggests, a platformer + a sandbox. You have no objective, and you can do whatever you want in this game. You can hop on platforms, fall on the ground, change your character's look, change the gravity, create an infinite gravity loop, destroy stuff, go through "blocks" (as if you are a ghost, a.k.a "one-way" block), and much more.
(Note: The custom cursor has another use apart from making the cursor look fancy -- find out!)

-- Instructions --
LEFT Key = Move your character left.
RIGHT Key = Move your character right.
UP and DOWN Keys = Had a purpose, but now removed.
SPACE Key = Jump.
S Key = Fan :D
TAB Key = (Don't cheat.) Help.
CONTROL Key = Respawn your character, handy if you encounter a bug.

#a1 - To add a block, refer to the inbuilt tutorial (TAB) or follow this:
Notice the rectangle at the bottom? That's the TOOLBOX. There are many other smaller squares inside. To add a block, click on any ONE square in the TOOLBOX, and --- notice the field surrounded by
the red blocks? that's the SANDBOX PLAYFIELD --- then click on the SANDBOX PLAYFIELD.

Do the same to add a gravity changer (the arrows). (Hint: They change the gravity in the direction they're pointing in :D)
You can open the "OPTIONS" by pressing the SHIFT Key. I couldn't include it in the tutorial :(
In the OPTIONS, you can allow blocks to be "one-way": allow the character to go through them, but still support him when he falls, you can allow blocks to be "destroyable": jump on them a random amount of times, depending on which block you choose, and it will be destroyed. Don't worry, you can respawn the blocks again! Just refer to the technique on #a1.
You can also respawn the character in the options menu.

Think you can make a better game? Then PM me and I'll give you a login to the developer den on the platform sandbox site so that YOU can help develop the game (and I'll add YOUR username in the credits, too. Just send me the FLA on the dumping grounds and PM me the link after you finished developing it)

I think this is THE first time I'm giving a game's source code away for free. Make the most of it, it won't stay forever! The source code will only stay for a few months!

The platform sandbox site: http://platformsandbox[do t]yolasite[dot]com[slash]

Ciao for now!
~ Gimmick