Well… it’s cheap, so it doesn’t matter whether it’s Baseball or Bound High!… 
OK. Here is a background (without the floor or anything) for Rumblebee, made by gamma correcting the HONEY.BMP background from Windows 3.x, converting it to 4 colors, and tiling it. The image is sized 384*224, like the VB’s display. If you want it to be longer (for scrolling backgrounds), tell me.
It’s intentionally dark so it doesn’t attract too much attention and lets the player concentrate on the characters.
Attachments:
Nice. Will there be any character stats shown in the character select screen? The characters could differ in attacks, speed, jump height, etc.
For example, one character could be an offensive one, having strong attacks, but wouldn’t be very fast and couldn’t jump over the opponent, while a defensive character would be the exact opposite. Just a suggestion.
And maybe there could be a dedicated jump button. Using “up” to jump is annoying.
Now you need to implement gravity. Maybe this could be done like this: if a character’s Y position (at their legs) is higher than the ground level, decrement it until they’re equal. Then jumping could be done like… I don’t know, let’s demonstrate it with some code: (NOTE: not tested, and I might have forgotten something, this is just a very rough draft. ALSO, under no circumstances use those variable names – replace them with something more descriptive!)
// jump & gravity idea, by HorvatM, 12/31/2009
// if code is too fast, use timers for delaying w/o affecting the rest of the game
// variables for jumping & gravity
// NOTE: their value is not defined - define it yourself
char y; // character's Y position
char j; // flag: is the character in the middle of a jump, and in what position?
char p; // jump power - how many pixels the character travels in one go - must be at least 2, otherwise it won't work b/c of gravity
char m; // character's max. Y position - how much can the character jump
const char g; // ground level constant
while(1) // main loop
{
if(vbReadPad() & K_A & y==g & j=0) // begin jump if A is pressed and we aren't already in the middle of a jump and if we are on ground level
{
j++; // j becomes 1, which means true
}
if(j) // if j is true, i.e. more than 0, which means we are in the middle of a jump
{
if(jg) y--; // gravity
// code for movement, AI, etc. goes here
}
Of course these are all just my suggestions. I don’t want to annoy you in developing your game.
Maybe the title and character screen could use some 3D effects? Like this:
