ENEKO ALONSO  This is my first application ever in XCode. First it was only 10.5, due to some new objects I used. On this version I removed those components and tried to compile it for 10.4, but apparently I missed something.

I'll try to find what it is :)   
(Version 1.0.3)

ENEKO ALONSO  I know! It's a pain it requires Leopard.

This is because it uses the new components from XCode 3.0 for the toolbar.

I have pending to develop a version without this requirement, hopefully I'll have it soon.  
(Version 1.0.2)

PETER DA SILVA  That's one thing that Microsoft did right. If you uses a newer component (library, what have you) in your app, you can include that component with it. Their implementation was horrible, of course, because they used simple unversioned names rather than versioned file paths to identify components (which led to DLL Hell), but the goal was sound.  
(Version 1.0.2)

ENEKO ALONSO  My Game of Life is a cellular automation "game". Although it is called a game, it is a zero player game, so the only thing the user can do is watch the evolution of the cells, besides modifying some cells and creating some structures.

There is more info about the history of this game and its rules at Wikipedia:

http://en.wikipedia.org/wiki/Conway%27s_Game_of_Life

Thanks for the interest for downloading this tool (my first Mac application :)  
(Version 1.0.2)

EAGLELOUK  looks pretty cool for your first app even if the interest of the game is not awesome :p

i'll download it.  
(Version 1.0.2)

FYREFLYE  Here's a page with a number of links helpful toward understanding and playing the "game:" http://www.ibiblio.org/lifepatterns/  
(Version 1.0.3)