I thoroughly enjoy this hack. Its well made, and clearly had some time put in to it. The only noticeable glitches may be the Sinnoh starter glitch (see below) and the fact that you can only obtain the Root Fossil. This game is actually pretty spotless, and is a great hack of the game it is based off, Pokemon Ruby. Some of the Sinnoh sprites look funky, but at least they are available. As a hack, all Pokemon that you would need to trade to evolve can be evolved normally through level, most at level 42.

Sinnoh Starter Glitch:
When Turtwig evolves he goes down three levels.
When Piplup evolves he goes up two levels.
When Chimchar evolves he goes down one level.

This game also has a ton of attainable legendary Pokemon, as the title implies, but many can be caught until the credits roll. There are a few new Pokemon, such as Baby Lugia, Angellan, and the return of Shadow Lugia from XD: Gale of Darkness.

Graphics-
Just like any Pokemon game, I feel like its not the best the system has to offer. The graphics and the like are the same as Ruby with obvious map changes, and some odd floating spaces in some places, minor bugs. I'm impressed with the Legendary Sinnoh sprites however, since they've all been drawn in, and they look pretty good. But Arceus replaces Scizor.

Sound-
I can't really say I loved the sound, because I played through most of the game in superspeed, where the music sounds like a jumbled mess. Listening to the sounds now, I think its very similar to Ruby, with some new battle themes and mixed up Route music. It's pretty good, but not amazing in any regard. The sound does shine in certain places like Dark path, and the past version of Rentelbud. The music created quite the eerie atmosphere, and sets the tone for the entire game.

Addicteveness-
I give every Pokemon game I play a ten. If you need reasons for me to give it a ten, play it and tell me what you think. I'm addicted to Pokemon, especially Gen III. I say it each time. Every Pokemon is different, which means building the "perfect" team can be as difficult as it is enthralling. Plus, since this game is different than Ruby, the Lunatine and Solrock you've come to expect in Meteor Falls have been replaced by Larvitar and Gible. A welcome change indeed, and the surprise factor helps make this game feel totally new.

Story-
What?! A Pokemon game with a good story?! Indeed. This game is shockingly well written, with an awesome background story and a twisting turning plot that will surprise you at times. I won't say more... I don't want to ruin it for you...

Depth-
As with most Pokemon games, there are plenty of Pokemon to catch, and trainers to battle, making this game as deep as any other. This game has many more legendaries than Ruby, including Sinnoh, which makes it a fantastic game.

Difficulty-
It's still a Pokemon game though. Experienced trainers will find it easy and fast paced. Superspeed training makes it even easier... The difficulty doesn't detract from the overall product however.

Overall, this is a fantastic hack, on par wit Ruby, and is definitely worth a look by any Pokemon fan.