Super Mario Bros. 1


Change What?
Where in the HEX Editor?
Level Layout
You don't need it!
Just use a  Mario 1 editor.
Fireballs
1C - normal 
1B - explode on contact with anything (except Mario) 
19 - appear in the air and just bounce along the
       top of the sky 
15 - straight forward 
13 - same but bounces off the corners of blocks
       every now and again. 
10 - explode on contact but don't hurt anything 
FF - explode on Mario (hehe) but don't hurt him 
CF - kill first enemy on the screen when you shoot
        a fireball regardless on whether or not you
        actually hit it 
9F - shoot a fireball then jump to launch into the air;
       jump and shoot a fireball in the air to either shoot
       up or shoot down (sometimes through floor) 
63E2
FireBalls' Color
F8 - normal 
D0 - 2 blocks above Mario 
CA - 3 blocks above Mario 
FE - shoot slightly farther 
FC - shoot much farther 
F7 - straight ahead; misses goombas
       but sometimes hits koopa troopas 
63FB
Properties for Enemies
03 - normal 
E0 - everything that touches ground bounces 
E1 - everything that would bounce in E0 falls and 
       some things walk through walls.
E6 - you can't stomp anything but you bounce off ie. 
       goombas flatten then pop back up 
FF - everything falls through the floor 
17 - everything is bouncing around and giving you 
       lots of points. 
38 - 17 without the points 
39 - enemies bounce after you 
3B - everything bounces until it hits the lowest 
       ground (cracked blocks) then it is carried away 
      and can't hurt you. 
42 - most things are scared and bounce away! 
43 - most things are scared and run away even 
       through bricks; jump off cliffs and then bounce
       if they land on ground 
4D - 43 with less bounce 
54 - everything runs VERY quickly your way through 
       anything but doesn't turn around 
56 - everything runs quickly your way through 
        anything but does not turn around 
6206
What happens when you stomp
on an enemy?!
04 - normal 
89 - walk flat (can still hurt you) 
49 - small spring 
29 - fall left 
69 - fall right 
09 - flatten then unflatten while falling 
5BE5
More Stomping Properties
01 - fall down 
49 - traffikoopa (morph to turtle; keep stomping to 
       change to red, then green, then red, ect.) 
 5A95
And More Stomping Properties
00 - don't flatten but turn around 
01 - unflatten quickly (can bounce off of multiple
      times to get 1ups) 
02 - unflatten quickly (no multi-bounce) 
30 - disappear in 30 seconds 
FF - stay flat and don't disappear 
5AE2
Jumping in Place
(lower the value, higher the jump)

20 - normal 
19 - Luigi jumps 
00 - float up as long as you hold the button 
      I'm not sure what the next byte means but set it
     to whatever you put standing jumps as. 

3634
Jumping while Walking
(lower the value, higher the jump)

1E - Normal 
19 - Luigi jumps 
00 - float up as long as you hold the button. 
       I'm not sure what the next byte means but set it
      to whatever you put the running jumps as 

3636
Jumping while Running
 (lower the value, higher the jump)

28 - Normal 
21 - Luigi jumps 
00 - float up as long as you hold the button.

3638
Warp Zone 1
0A02
Warp Zone 2
0A06
Warp Zone 3
0A0A
Color of Fire Mario.
5F0-5F2 
Color of Mario's fireballs, coins, mushrooms, and other items. 
CF4-CF6
Color of Mario's fireballs
(underground and in castles)
D18-D1A 

Info found by:
DarKnight13
Jay McGavren
 

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