GCD files contain starting character profiles. They are used together with .BIO (biography) files to create premade characters.
In addition to the 'theme' characters combat.gcd, stealth.gcd and diplomat.gcd, there are three other files: demo.gcd, blank.gcd and player.gcd.
Some of the derived stats from the file are not used but rather calculated by the engine instead.
| Offset | Meaning | Values |
|---|---|---|
| Game flags | ||
| 0x0 | This part is not fully understood, but includes indicating some of the status tags shown in the lower-left part of the screen. It's known that 0x00000001 - "sneak", 0x00000008 - "level", 0x00000010 - "addict". The tags for "poisoned" and "radiated" are not here. | - |
| Primary stats | ||
| 0x4 | Strength (ST) | 0 to 10 |
| 0x8 | Perception (PE) | 0 to 10 |
| 0xC | Endurance (EN) | 0 to 10 |
| 0x10 | Charisma (CH) | 0 to 10 |
| 0x14 | Intelligence (IN) | 0 to 10 |
| 0x18 | Agility (AG) | 0 to 10 |
| 0x1C | Luck (LK) | 0 to 10 |
| Secondary stats | ||
| 0x20 | Hit Points | = 15 + 2 * EN + ST |
| 0x24 | Action Points | = 5 + AG / 2 |
| 0x28 | Armor Class | = AG |
| 0x2C | Unarmed Damage (this is not used by the game! Melee Damage stat is used instead.) | - |
| 0x30 | Melee Damage | = ST - 5 |
| 0x34 | Carry Weight | = 25 + 25 * ST |
| 0x38 | Sequence | = 2 * PE |
| 0x3C | Healing Rate | = EN / 3 - This value will always be at least 1. |
| 0x40 | Critical Chance | = LK |
| 0x44 | Critical hit modifier | ? |
| 0x48 | Damage Threshold - normal | 0 to 999 |
| 0x4C | Damage Threshold - laser | 0 to 999 |
| 0x50 | Damage Threshold - fire | 0 to 999 |
| 0x54 | Damage Threshold - plasma | 0 to 999 |
| 0x58 | Damage Threshold - electrical | 0 to 999 |
| 0x5C | Damage Threshold - EMP | 0 to 999 |
| 0x60 | Damage Threshold - explosive | 0 to 999 |
| 0x64 | Damage Resistance - normal | 0 to 100 |
| 0x68 | Damage Resistance - laser | 0 to 100 |
| 0x6C | Damage Resistance - fire | 0 to 100 |
| 0x70 | Damage Resistance - plasma | 0 to 100 |
| 0x74 | Damage Resistance - electrical | 0 to 100 |
| 0x78 | Damage Resistance - EMP | 0 to 100 |
| 0x7C | Damage Resistance - explosive | 0 to 100 |
| 0x80 | Radiation Resistance | = 2 * EN |
| 0x84 | Poison Resistance | = 5 * EN |
| 0x88 | Age | 16 to 99 |
| 0x8C | Gender | 1 - female, 0 - male |
| Bonuses to primary stats | ||
| 0x90 | Bonus to strength | 0 to 10 |
| 0x94 | Bonus to perception | 0 to 10 |
| 0x98 | Bonus to endurance | 0 to 10 |
| 0x9C | Bonus to charisma | 0 to 10 |
| 0xA0 | Bonus to intelligence | 0 to 10 |
| 0xA4 | Bonus to agility | 0 to 10 |
| 0xA8 | Bonus to luck | 0 to 10 |
| Bonuses to secondary stats | ||
| 0xAC | Bonus HP | 0 to 999 |
| 0xB0 | Bonus AP | 0 to 999 |
| 0xB4 | Bonus AC | 0 to 999 |
| 0xB8 | Bonus to unarmed damage (NOTE: this is not used by the game! Melee Damage stat is used instead.) | - |
| 0xBC | Bonus to melee damage | 0 to 999 |
| 0xC0 | Bonus to carry weight | 0 to 999 |
| 0xC4 | Bonus to sequence | 0 to 99 |
| 0xC8 | Bonus to healing rate | 0 to 99 |
| 0xCC | Bonus to critical chance | 0 to 100 |
| 0xD0 | Bonus to critical hit modifier | 0 to 100 |
| 0xD4 | Bonus to DT (normal) | 0 to 999 |
| 0xD8 | Bonus to DT (laser) | 0 to 999 |
| 0xDC | Bonus to DT (fire) | 0 to 999 |
| 0xE0 | Bonus to DT (plasma) | 0 to 999 |
| 0xE4 | Bonus to DT (electrical) | 0 to 999 |
| 0xE8 | Bonus to DT (EMP) | 0 to 999 |
| 0xEC | Bonus to DT (explosive) | 0 to 999 |
| 0xF0 | Bonus to DR (normal) | 0 to 100 |
| 0xF4 | Bonus to DR (laser) | 0 to 100 |
| 0xF8 | Bonus to DR (fire) | 0 to 100 |
| 0xFC | Bonus to DR (plasma) | 0 to 100 |
| 0x100 | Bonus to DR (electrical) | 0 to 100 |
| 0x104 | Bonus to DR (EMP) | 0 to 100 |
| 0x108 | Bonus to DR (explosive) | 0 to 100 |
| 0x10C | Bonus to radiation resistance | 0 to 100 |
| 0x110 | Bonus to poison resistance | 0 to 100 |
| 0x114 | Bonus to age | 0 to 35 |
| 0x118 | Bonus to gender | Positive values - female, negative or zero - male |
| Skills Bonus | ||
| 0x11C | Small Guns | 0 to 300-(5+4*AG) |
| 0x120 | Big Guns | 0 to 300-(2*AG) |
| 0x124 | Energy Weapons | 0 to 300-(2*AG) |
| 0x128 | Unarmed | 0 to 300-(30+2*(ST+AG)) |
| 0x12C | Melee Weapons | 0 to 300-(20+2*(ST+AG)) |
| 0x130 | Throwing | 0 to 300-(4*AG) |
| 0x134 | First Aid | 0 to 300-(2*(PE+IN)) |
| 0x138 | Doctor | 0 to 300-(5+PE+IN) |
| 0x13C | Sneak | 0 to 300-(5+3*AG) |
| 0x140 | Lockpick | 0 to 300-(10+PE+AG) |
| 0x144 | Steal | 0 to 300-(3*AG) |
| 0x148 | Traps | 0 to 300-(10+PE+AG) |
| 0x14C | Science | 0 to 300-(4*IN) |
| 0x150 | Repair | 0 to 300-(3*IN) |
| 0x154 | Speech | 0 to 300-(5*CH) |
| 0x158 | Barter | 0 to 300-(4*CH) |
| 0x15C | Gambling | 0 to 300-(5*LK) |
| 0x160 | Outdoorsman | 0 to 300-(2*(EN+IN)) |
| Unknown | ||
| 0x164-0x16F | Unknown. These values are always zero. | - |
| Other | ||
| 0x170-0x18F | Character name | 0 to 32 characters, padded with zeroes |
| 0x190 | First tagged skill | 0 to 17 |
| 0x194 | Second tagged skill | 0 to 17 |
| 0x198 | Third tagged skill | 0 to 17 |
| 0x19C | Fourth tagged skill (This stays default value unless GCD was edited manually outside of the game.) | 0 to 17, default is FF FF FF FF |
| 0x1A0 | First trait | 0 to 15 |
| 0x1A4 | Second trait | 0 to 15 |
| 0x1A8 | Character points (for stats) | 0 to 70 - (ST+PE+EN+CH+IN+AG+LK) |