Rom Hacking

[MaxXimus]

I was trying to teach myself hex editing, so I decided to try at a translation project for Pokemon Blue. As far as graphic hacks go, I Replaced the entire alphabet, and did both a custom title screen, and a rip of the USA logo. The hex editing was a no go. I just ended up screwing everything up.

[133MHz]

Also, the title screen is not compressed (unless you're using that term very loosely).  All of the tiles that are used to make the logo are uncompressed.  There is a map somewhere that tells the title screen where to place each tile.  Some tiles are used multiple times, so it makes it hard to edit without knowing where that map is and how to manipulate it.

Yeah that's what I'm talking about, some tiles are reused multiple times so it needs quite a bit of tweaking to replace it with your own.

[nurd]

Like the clouds and bushes...

[UglyJoe]

The clouds and bushes are hard to place.  It's not something that's laid out in the level data, it's an algorithm that places them in particular locations.  The algorithm can be changed, of course, but it's more complicated than simply changing an x,y location.

[nurd]

I was talking about how some things are used in multiple places.

[133MHz]

The top half of the clouds are also used as bushes by using a green color palette. Besides, most symmetrical stuff is stored as one side only and the other is generated by mirroring the tiles.

[UglyJoe]

The only hack I ever finished was adding pants to Code Name: Viper.

http://www.ximwix.net/boneyard/design19/xb/cnv.htm