Earthbound RNG manipulation Onett

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RNG 1: 1 byte hex value at 0x7E0024

RNG 2: 1 byte hex value at 0x7E0026

RNG 3: 2 byte hex value at 0x7E4A7A

An L check advances 20 units

AA advances 28 units

A↑A advances 22 units

AB advances 3 units

Location Notes RNG 1 RNG 2 RNG 3
Sitting On Yep 20 total cursor movements (with A and start for confirming selections. 5E D4 0000
Out of Bed Watch the cut scene for funzies E7 A5 0000
A takes it Left, up-left into room, down-left slightly to go around desk, L to take present quickly. 8D 48 0000
Leave house (Black screen) Equip the bat (must go quick or the RNG messes up. If Paula moves down then right, you are good. Out of room, the left down stairs, slight down-right to make it around the table, then right out of the house 05 50 0000
"Hey, A" Down-left slighty, then down to grass line at fence-line. The game lags here very slightly so use that as a cue to then turn down-left. Go all the way down, the left against cliff. Up-left around. At traveling salesman area, up-left over diagonal flower line, then up when you are in line with the upper-most pink flower in that little line. RNG 3 is not active here so specific movement when NPC's are not loaded is not important. Note that Pokey's movement is scripted so it doesn't matter how long he stays on screen or when you talk to him. D3 EB 0000
"Welcome home, A" When you're going through the salesman area again, bump against the tree to force Ness into that X coordinate so that the RNG is guaranteed. Turn right at the bottom flower. Then wrap around and diagonal-up into Ness's house (the opposite of what you did coming out). 83 95 0000
"L-L-Listen!" Left, down the stairs (Tracy should go up, then left). Down-right (you can use the second pattern down from the table on the floor as a reference of when to turn right. Hold right, then up-right a little underneath the dog to put you underneath the couch, then right more until Pokey emerges B7 F7 00AA
Dressed in Room Left and talk to mom. She should move up and be in your horizontal line. FC FA 00CD
Leave House Left to downstairs. Down-right a little to the same pattern point as before. Up-right to talk to pokey. Right to door, then left and up to phone. (Mom should be in the middle of her movement when you use the phone. Just go quick and you'll catch it at the right time). Down , then right and out. The RNG value is not super important here as it can fluctuate based on wrong movement. You're expecting ideally one dog to the southwest, but several other spawns can result in the same ending RNG if you follow the exact same actions. A snake and a crow, for example, will fix itself if you follow the same actions. 9E 6F 0154
Wha-! 88 A3 0269
Buzz Buzz / Pokey convo done 59 41 0269
It's been a long time... AA at meteorite. Make sure to bump against the tree on the way back into the NPC zone BF 24 0269
A gained 16 exp Auto fight, remove auto during second shield. B, then attack. C6 F0 0269
Buzz Buzz ends conversation BF 44 0269
It's day! Walk straight left until under Aloysius, Talk, then down roll down right to right and walk right out of house 39 62 02A5
Just north of big tree Walk down, then turn diagonal, guide along north of tree, turn diagonal down right when ness's right side is aligned with left side of crow. Guide down. ED 28 02D2
Hit right outcropped tree on east-west path Walk down to bottom line of path (This is critical – do not turn too early. Turn once Ness is past the path), turn down-left until hit tree, then walk around and follow the top line of path left. 1A B1 02F6
Enter Drugstore Walk left to tree, clip down and line up Ness's hat brim with bottom of tree. follow path down-left, turn left right before hitting the tree, and then follow the other path down-left. Turn left at the bottom line of the cross walk. Enter far right side of drugstore. Addtional Note: If lady goes down and boy moves up as they go off screen, do the following to fix it: In front of the drug store, A up up up B, then go in. 1B 21 0355
Leave Drugstore Down left, then up left until even with ATM, withdraw 40, go buy tee ball bat and leave. 1D C1 0391
Right of mailbox Leave drugstore, go left and clip up against the store and bush. Go left for like 2 pixesl, then down-left and then turn down to clip against the left side of the tree. Go down – turn down left at south sidewalk, then down again to clip along right side of mailbox. 23 82 03FD
Enter Arcade Walk right, then turn up to enter right side of doors C5 CC 040C
A gained 15 exp Walk left, AA behind first arcade machine – AB then bash. A2 3A 042F
A gained 13 exp Walk left then up, then bash 9B 03 0434
A gained 50 exp AA x 4, then up, immediately turn right then up in line with Frank. B, then auto fight till death 2A 19 0462
A gained 76 exp Bx3, Goods > down down, right, use tee ball bat. Then Bx1 bash. Bx2, Goods > right down, use tee ball bat. 47 33 0462
"Adventure Just beginning" 45 A3 0462
Enter Arcade Walk left to flowers, then down 5A 31 0467
Leave Arcade Walk down to middle of machines, turn right, AB behind last arcade machine 0D D6 048F
Enter Town hall Walk right, guide against curb, turn up to guide against tree, turn up-left in the middle of the cross walk, then left and up into middle of entrance 7E FF 04EF
Leave Town hall Walk left, AA in front of receptionist, 99 B3 05DA
Underneath Mole Walk down, turn right at bottom of steps, wrap around town hall and hold up. Turn up-right in the middle of the sidewalk, wrap around the tree, then up left and wrap around the tree. Go up and turn left right as you hit the tree. Turn up-left after the trees. 16 19 064E
Enter Shack Turn left, then follow bottom of path diagonally, turn up when you can guide against the tree. Use key, and then up-left into shack. 47 D3 0673
Leave Shack L, AB 77 E5 069B
In Giant Step Up, left, then up to enter Cave 7B 5F 06D9
A took it (1st Bomb) Push up into corner, L, then AB. Hold left, just before the slug fight, AB 29 87 06ED
A took it (2nd Bomb) L, wait for the flashing to stop. then walk left. 5A F3 06F2
Exit Cave L right after drop, then walk left until you stop. AB, then around,Walk diagonal up to rope. , turn up-right onto rope, One Ness length up, A up A, then AB at the top after you get off. Enter right side of door. 8E 5F 0783
Reenter Cave Down, left, then up into cave. A down down b before entering 88 B3 07B0
Begin Titanic Fight Hug left wall, A Down B, enter room. In next room, down-left to floor, up left to top. A UP a before entering next room. Up to Titanic. Go to his left side (don't guide up, just fight the left side. Left and up). Lifeup twice, then begin fight. 30 6E 0850
Titanic First Round: Bx2, Goods, Up, Right, Bomb 05 38 0850
Titanic Second Round B, Goods, Right down down Bomb AE B0 0850
Gained 685 exp 25 27 0850
Reenter cave after butterfly section Down right to sound. Up left back into cave. Normal actions in cave to leave. Down right in butterfly area, then right and up. 0D 16 0937
Exit Giant Step Down right until hit wall, right and down rope. Down to cliff and then left all the way then down the rope. Down slightly then right all the way out (you'll go between the little stalagmites). AA right before leaving BA EF 09FA
Exit shack B to cop, right, down right, then down to enter shack (Entering from just right of the tree) 96 E4 0A4E
Enter Police Station Down till hit tree, then right, Down at mole. AB, AA. Right till you'll guide against tree, then down. Down-right through two tree sections. Down-left at bottom line of crosswalk. Down when in line with mailbox. Right and around bush. Up-right into police station. CC 13 0B14
"Whis is the road to Twoson closed?" AA x 4, talk to Strong from bottom. 7F B7 0B40
First Cop Bash 32 76 0B9A
Second Cop Rockin C8 BB 0B9A
Third Cop Bx1, Rockin 7F 1F 0B9A
Fourth Cop Bash 67 B7 0B9A
Strong AB, Rockin. B, Bash. Mash to survive. 8B 34 0B9A