Undertale Genocide Encounter Info 1.0

GENOCIDE ENCOUNTER INFO
ALL INFORMATION IS FOR 1.001 AND MAY BE DIFFERENT IN 1.05 BUT I REALLY DOUBT IT'D BE CHANGED

Technical bits so you can understand

A random range i.e 15, will roll 0-15 so that there's 16 numbers in all.

Every frame that you're moving your step counter goes up by one. 1 second for 30 steps.

Encounter rate works like this
Minimum steps = 80. Random steps = 40 Population = 20. Kills flag = 202

Minimum steps is self explanatory. Random steps means the game rolls from 0-40 and adds that number onto minimum steps, If we got the worst rng we would need 120 steps. Population is going to determine the modifier for encounter rates as you kill more enemies. Kills flag is used alongside population to keep track of what your encounter rate multiplier should be.

This example was made using the first room that you can get encounters in, the froggit whimsun room.
If you dont room refresh, the steps required easily triples. so room refreshing is 100% necessary to be fast ANYWHERE OTHER THAN CORE.

Core is unique in that only the random steps increase, not the base steps. meaning if you got perfect RNG you would never need to room refresh. If you dont refresh, there is a 50/120 that you lose time. According to math done a while ago, It's always worth to refresh on average. So it's ultimately a preference. Keep in mind as you go further into your murderous rampage rolling bad random steps will be more punishing.

Many areas have scripted encounters, meaning that the first enemy in the scripted encounter must be fought before you fight the second and so on. You need to fight all scripted encounters before you can get random enemies in that room.

Now that the weirdness is out of the way, here are the encounter rates.
---------------------------------------------------------------------------------------------------------------------------------------
RUINS: FROGGIT/WHIMSUN GRIND
Steps: 80 base, 40 random.
Random roll: 0-2
Rolls 0,1 = Froggit
Rolls 2 = Whimsun
Overall chance
66% froggit
33% whimsun

RUINS: 3 ROCK ROOM GRIND
Steps: 60 base, 60 random.
Random roll: 0-20
0-5 = Froggit, Whimsun
6-10 = Moldsmal
11-15 = Moldsmal, Moldsmal, Moldsmal
16-18 = Froggit, Froggit
18-20 = Moldsmal, Moldsmal
ROUGH Overall chance
28% = Froggit, Whimsun.
23% = Moldsmal.
23% = Moldsmal, Moldsmal, Moldsmal.
13% = Froggit, Froggit.
13% = Moldsmal, Moldsmal.

SNOWDIN: BOX ROOM/PAPYRUS STATION ROOM
Scripted encounters
Snowdrake > Icecap > Lesser Dog [you must progress past papyrus station room to fight lesser dog. otherwise it just gives you snowdrake/chilldrake or icecap at a 50/50 chance]
Steps: 120 base, 30 random.
Random roll: 0-15
0-7 = Chilldrake
8-15 = Icecap
Overall chance
50% Chilldrake 50% Icecap

SNOWDIN: JERRY ENCOUNTERS
Scripted Encounters
Jerry [You will never see this in genocide because the script is setup to completely skip all scripted battles after lesser dog is defeated]
Steps: 120 base, 30 random
Random roll: 0-15
0-7 = Icecap, Jerry
8-15 = Icecap, Jerry, Chilldrake
Overall chance
50% Icecap, Jerry
50% Icecap, Jerry, Chilldrake

WATERFALL: PRE-DUMMY
Scripted Encounters
Aaron > Woshua > Moldsmal, Moldsmal
Steps: "Factor" base. 30 random [Factor is dependant on room. factor is 110 in the telescope puzzle room. factor is 340 in the second bridge seed room. if you're entering from the first bridge seed room, factor is 20, The encounterer destroys itself after that. Anywhere else its 360
Random roll: 0-15
15 = Last Encounter you got
11-14 = Woshua
7-10 = Moldsmal, Moldsmal
4-6 = Aaron
0-3 = Woshua, Aaron
ROUGH Overall chance
7% = Last Encounter you got
25% = Woshua
25% = Moldsmal, Moldsmal
18% = Aaron
25% = Woshua, Aaron
Note: You only get one pre-dummy encounter that isn't scripted. Ideally you want double moldsmal

WATERFALL: POST-DUMMY
Scripted Encounters
Temmie > Moldsmal, Moldsmal > Woshua, Aaron > Moldbygg, Woshua
Steps: 60 base, 20 random. Outside of genocide its 360 base, 30 random.
Random roll: 0-15
15 = The same encounter you got last time
10-14 = Woshua, Aaron
4-9 = Moldbygg, Woshua
0-3 = Temmie
ROUGH Overall chance
7% = Last encounter you got
31% = Woshua, Aaron
37% = Woshua, Moldbygg
25% = Temmie

HOTLANDS: EVERYWHERE
Scripted Encounters
Vulkin > Tsunderplane > Pyrope > Tsunderplane, Vulkin > Pyrope, Pyrope
Random roll: You shouldnt get these encounters on a normal geno. Just refer to scripted encounters.
0-15 = ??%
Overall chance
??%

CORE: EVERYWHERE
Scripted Encounters
Astigmatism > Whimsalot, Final Froggit > Whimsalot, Astigmatism > Final Froggit, Astigmatism > Knight Knight, Madjick
Steps: 70 base, 50 random. Outside of genocide it's 80 base, 50 random. only applies before you exhaust the scripted encounters. after you do its 240 base, 50 random
Random roll: 0-15
13-15 = Final Froggit, Astigmatism
10-12 = Whimsalot, Final Froggit
7-9 = Whimsalot, Astigmatism
4-6 = Knight Knight, Madjick
2-3 = Final Froggit, Astigmatism, Whimsalot
1 = Knight Knight
0 = Madjick
ROUGH Overall Chance
18% = Final Froggit, Astigmatism
18% = Whimsalot, Final Froggit
18% = Whimsalot, Astigmatism
18% = Knight Knight, Madjick
12% = Final Froggit, Astigmatism, Whimsalot
6% = Knight Knight
6% = Madjick