Scratch

That's a pretty big mouthful to bite off!  You might want to start with smaller things and work up to more complicated things.  Maybe start with sprite motion, then interaction with other sprites. 

Unfortunately, there isn't really a way to make a workable multi-player online game in the current version of Scratch.  But you can make some pretty cool "virtual world" type projects that a single player can explore.

The penguin movement is easy. It is just the arrow key script which is one of the most common scripts in scratch.

when gf clicked
forever
if <key up arrow pressed>
change y by 5
end
if <key down arrow pressed>
change y by -5
end
if <key right arrow pressed>
change x by 5
end
if <key left arrow pressed>
change y by -5
end
end

when gf clicked
forever
go to sprite 1 v // Change this to which sprite the penguin is.
end

Paddle2See wrote:

Unfortunately, there isn't really a way to make a workable multi-player online game in the current version of Scratch.  But you can make some pretty cool "virtual world" type projects that a single player can explore.

yes there is, i simply havent released it yet :P

I mean like Fireicedude's Penguin Village.