TOP Forum

Yes, ActionScript of most of the TOJ's Flash games (http://toj.mooo.com/toj_flash/) can be decompiled by using a tool named Flare (http://www.nowrap.de/flare.html).
The engine is named Garlic, which is the same engine as TOJ's client. (Try searching "GarlicImpl" in tetris.exe)

List of interesting things from Tetris Dash (dash_090707_toj_594px.swf):

• O Tetromino doesn't rotate at all.
• There is an unused class named "TetrisAI". Probably they wanted to put AI battle?
• There are some partial implementations of Anti Miss Drop item.
• There are some partial implementations of Replayer.
• There is a protection that prevents the game from working on local drive. But the protection is simple. It just checks the existence of "http" in the URL.

stardust tetris has bit better protection, it connects some url on tetrisonline.jp to get authorization to play, so you can't make it work without moddification. but because if is .NET application, you can decompile it easily with ILSPy or dotPeek.

I created a Java port of (Flash games version of) Garlic engine, "GarlicClone".
It allows you to play simple Tetris game on near-perfectly cloned TOJ engine.
It also includes AI codes that can run TOJ's Lua scripts. (But you need JRE1.6+ and "kahlua2-v6.jar" from https://github.com/krka/kahlua2/downloads)
So you can create your own TOJ minigames now. Have fun!
You can change some of settings by editing "config/config.properties" file by any text editor. (Sorry, no key config yet)

Wojtek: Thanks for the tip! The code of Stardust is interesting too. Too bad they didn't port AI at all...

EDIT:v1.1 Released!

T-Spin AI will now use instant lock. (It wasn't in original Flash codes)

You can select the game mode in start-up screen. Push Left/Right keys to select.

Anti-miss added. (kahlua2 and JRE1.6 required)

Download GarlicClone from below:

so cool
but seems t-spin AI doesn't use hard drop when performing t-spin..?

great to see this released!

GarlicClone v1.1 is now available! See my above post to download.

@farter:
Yeah, the T-Spin AI didn't use hard drop for T-Spins because there were no codes for it.
It appears that who ported the AI codes didn't do the good job for T-Spin portions.

@Wojtek:
Thanks for the beta testing it

finally i found free AS3 decompiler: http://sites.google.com/site/as3extractor/

I've had the most success with Sothink SWF Decompiler, which costs $80 if you're an honest person, which I'm not.