Drop each animal on top of the others to create groupings of three and they'll disappear.  If you can clear the screen you'll win. 

Falling Pets is a fairly fun game but similar to others from DS Effects. 

For some reason this sliding tile game is not mixed up when you begin playing it.  So, if you want to play this you need to mix the tiles up first.   Not really much to it, but at least you can choose various pictures for the tiles.

You get four illustrations and have to pick the real Meijin! Interesting game.

The site instructions say:

Select one of the four illustrations! The illustration is overrun with Meijin impersonators! Win by finding the one true Meijin amongst them all!

Clear the screen by double tapping two or more of the same symbols.  This is a simple but fun game that many people have made for the iPhone.  I really like this version because it's shiny and runs well. 

Definitely one of the better color/symbol matching games on the iPhone. 

This is bomberman meets memory. Be sure and pay attention!

The Hudson website says:

Outline：
It is a card memorization game based on comical animation of "Flipping With A Pop: Bomberman"! Go clear at short times!

How To Play：
Tap and collect panels with the same picture. Win by clearing all the panels on the screen!

38i has created a fun little puzzle game in which you need to move a ball onto every open square without crossing your path.  You can't move the ball in single squares so if there are 4 open ones in front of you the ball will go all the way to the end.

I enjoyed this and found it to be a challenging game that can eat up some time and make you think.  It took me a number of tries to figure out the puzzles so don't get discouraged!  Plus, there are 30 total puzzles so you'll be playing this for hours. 

Under Clouds has created a fun game which is a cross between a Rubik's cube and color matching.  The game instructions say:

Solve the puzzle by twisting the layers to match three or more gems of the same color together.
Keep an eye out on the timebar, game ends when it runs out. Every collected gem add more time to the bar.

I liked this game because you have to be smart and think a few moves ahead while watching the clock.  Once you've played it for ten or so minutes you'll get the hang of it.  

Gems is a very simple bejeweled style game which uses only colored blocks.  If you have a slow internet connection or want a hyper-simple version of bejeweled play this.  Personally, I wished there was a little more to it but it's still fun and worth playing.

Oh, also, you'll get little popups when you try moves you can't make.