MrSunStudios
Now, I’m sure you all check back everyday there already, don’t you? If not, you should do!
As an example of the excellent writing, here are the first 5 compiled articles on improving your Flash game development:

When to Use Storylines in Flash Games
34 Tips on Getting your Flash Game Sponsored
Efficient Flash Game Development
50 [...]

Remember to read parts one and two first!
Welcome to part the third of this series of tutorials on creating an avoiding game, I hope all is well so far with your games (remember, I reply to comments and emails if I can!) and we’re ready to advance the game slightly more. In this segment of [...]

Have another oldie from Foundation-Flash, this could be useful for all of you building an avoiding game!
Hello and welcome. Today, we will be making this (speakers a necessity)
The first things you are going to need for this tutorial are the sounds, which I have thoughtfully uploaded. One of them is the short explosion sound, [...]

Yep, another oldie for the newer developer. Learn how to use Flash’s shape and motion tweening ability.

In this tutorial you will learn you to use flash’s tweening techniques to create
smooth animation. There are two types of tweens, shape and motion tweening.

Welcome to the first part of the second parts of the Avoiding game tutorial (Blimey, that’s a mouthful!) This tutorial will expand on the game you will have already made and will include lives, boundaries, coin pickups for score, improving the hittest on enemies, a new method of timing and general little tweaks. I’m still [...]

There are a few ways to create a timing system in Flash, and this is the way with less Actionscript that was used in the Create a Simple Avoiding Game tutorial, but several people have commented that they had trouble with it, so here’s a more in-depth tutorial on how to create a simple timer in Flash which can be used to keep a score, or advance levels, or whatever you need!

Here’s part 2 of Bart de Boer’s translation of Emanuele Feronato’s platform game creation tutorial into AS3. For part one, see here.

Click here to see what you will have by the end of this tutorial.

It’s all commented, and there’s a source to download at the end.

You guessed it, an old one.

FrozenHaddock Tutorials: Randoms

In this tutorial, you will be learning how to randomise certain things in flash.
This can be useful for randomising questions in a quiz, or what sort of powerup
is going to pop up in a game. We are going to look at randomising variables and
randomising which frame to go to.

Learn how to create a simple avoiding game, with respawning enemies and a mouse-moveable character.

If you make something, remember to post it on the forum!

Ok, so maybe I’m fobbing you off with some old tutorials whilst I’m doing my exams, but hey, it’s content isn’t it? Here’s another old tutorial following on from the last one showing you how to add some simple actionscript to your buttons to perform the most called for commands.