- 7
- Ukraine
Hi all,
I’ve had some spare time recently and decided to spend it replaying GT2. One issue I’ve always had with GT2 is the AI. They’re very easy to beat, and I also dislike how the opponents tend to stay packed together all the time (except in endurance races). This wasn’t the case even in GT1.
So I went digging around the internet for any AI-related codes I could find. Most of the codes I found had no explanations, so I experimented to understand what they actually do.
Below are my findings.
Codes tested on NTSC 1.2:
1. Global multiplier
80046F78 01FE
80046F84 1000 (1000 is the default value, higher = tougher AI)
2. AI opponents speed boost
801DECC0 7F
801DEE80 7F
801DF040 7F
801DF200 FF (higher = tougher AI)
3. AI opponents speed and handling boost (?)
801DECC1 7F
801DEE81 7F
801DF041 7F
801DF201 FF (higher = tougher AI)
4. Catch-up settings (?)
801DEDE8 0000
801DEFA8 0000
801DF168 0000
801DF328 0000 (lower = tougher AI)
5. Physics tweak
6. Opponents grip level (?)
801D5AB2 FFFF
801D5B82 FFFF
801D5C52 FFFF
801D5D22 FFFF (higher = more grip)
7. Opponents car weight (?)
801D5A7A 0000
801D564A 0000
801D5C1A 0000
801D5CEA 0000 (lower = less weight)
If anyone can explain the codes marked with (?), or correct anything I got wrong, I’d really appreciate it.
I’ve had some spare time recently and decided to spend it replaying GT2. One issue I’ve always had with GT2 is the AI. They’re very easy to beat, and I also dislike how the opponents tend to stay packed together all the time (except in endurance races). This wasn’t the case even in GT1.
So I went digging around the internet for any AI-related codes I could find. Most of the codes I found had no explanations, so I experimented to understand what they actually do.
Below are my findings.
Codes tested on NTSC 1.2:
1. Global multiplier
- Increases the speed of all opponents
80046F78 01FE
80046F84 1000 (1000 is the default value, higher = tougher AI)
2. AI opponents speed boost
- Per-car value (starting grid positions 5-1)
801DECC0 7F
801DEE80 7F
801DF040 7F
801DF200 FF (higher = tougher AI)
3. AI opponents speed and handling boost (?)
- Per-car value (starting grid positions 5-1)
- Has noticeably less impact than the previous setting
801DECC1 7F
801DEE81 7F
801DF041 7F
801DF201 FF (higher = tougher AI)
4. Catch-up settings (?)
- Not fully sure about this one
- Seems to be per-car (starting grid positions 5-1) catch-up behavior
- Setting this to FFFF makes opponents move backwards from the start
801DEDE8 0000
801DEFA8 0000
801DF168 0000
801DF328 0000 (lower = tougher AI)
5. Physics tweak
- Appears to affect both player and AI
- Makes all cars less grippy overall
- Personally not a fan, since it makes tire compounds feel almost indistinguishable
6. Opponents grip level (?)
- Seems to be per-car grip value (starting grid positions 5-1)
- Changing this doesn’t have a huge impact
801D5AB2 FFFF
801D5B82 FFFF
801D5C52 FFFF
801D5D22 FFFF (higher = more grip)
7. Opponents car weight (?)
- Likely a per-car stat (starting grid positions 5-1)
- Feels like it increases or decreases car weight
801D5A7A 0000
801D564A 0000
801D5C1A 0000
801D5CEA 0000 (lower = less weight)
If anyone can explain the codes marked with (?), or correct anything I got wrong, I’d really appreciate it.
Last edited:
