XP, experience, and levels.
Levels[]
XP needed to level up = Current level × 500
| XP to next level | Total XP for level | |
| Level 1 | 500 | 0 |
| Level 2 | 1,000 | 500 |
| Level 3 | 1,500 | 1,500 |
| Level 4 | 2,000 | 3,000 |
| Level 5 | 2,500 | 5,000 |
| Level 6 | 3,000 | 7,500 |
| Level 7 | 3,500 | 10,500 |
| Level 8 | 4,000 | 14,000 |
| Level 9 | 4,500 | 18,000 |
| Level 10 | 5,000 | 22,500 |
| Level 11 | 5,500 | 27,500 |
| Level 12 | 6,000 | 33,000 |
| Level 13 | 6,500 | 39,000 |
| Level 14 | 7,000 | 45,500 |
| Level 15 | 7,500 | 52,500 |
| Level 16 | 8,000 | 60,000 |
| Level 17 | 8,500 | 68,000 |
| Level 18 | 9,000 | 76,500 |
| Level 19 | 9,500 | 85,500 |
| Level 20 | 10000 | 95,000 |
| Level 21 | 10,500 | 105,000 |
| Level 22 | 11,000 | 115,500 |
| Level 23 | 11500 | 126,500 |
| Level 24 | 12,000 | 138,000 |
| Level 25 | 12,500 | 150,000 |
| Level 26 | 13,000 | 162,500 |
| Level 27 | 13,500 | 175,500 |
| Level 28 | 14,000 | 189,000 |
| Level 29 | 14,500 | 203,000 |
| Level 30 | 15,000 | 217,500 |
| Level 31 | 15,500 | 232,500 |
| Level 32 | 16,000 | 248,000 |
| Level 33 | 16,500 | 264,000 |
| Level 34 | 17,000 | 280,500 |
| Level 35 | 17,500 | 297,500 |
| Level 36 | 18,000 | 315,000 |
| Level 37 | 18,500 | 333,000 |
| Level 38 | 19,000 | 351,500 |
| Level 39 | 19,500 | 370,500 |
| Level 40 | 20,000 | 390,000 |
| ... | ... | ... |
Monsters[]
Monsters give roughly 3× XP the first time you encounter them. The numbers are in ().
Higher level monsters sometimes give slightly more or less (± 10%) XP for unknown reasons. This can mean, that the numbers on first kills below (for example for the Xomboid) can be up to 100 XP off.
As you can see in the table below, the XP gap between normal and hard is about 20%. The XP gap between normal and insane is about 50%.
The ingame SotsDex displays XP-numbers, except for the very first versions of the game.
Character XP modifier[]
Different characters earn XP by a different rate. The amount of XP required to level stay the same, but the XP gained by successful actions and kills varies.
Testing was done by killing Ice Bats on normal on the first level
| Classes | Ice Bat first kill | Ice Bat further kills |
|---|---|---|
| Engineer | 126 | 42 |
| Striker | 108 | 36 |
| Scout | 90 | 30 |
| Ranger | 73 | 25 |
| Sheperd | 73 | 25 |
| Warrior | 73 |
25 |
| Seeker | 60 | 20 |
| Lich | 60 | 20 |
| Psion | 54 | 18 |
| Marine | 67 | 23 |
| Secret Character | 67 | 23 |
| Merc | 37 | 13 |
(All testing numbers are for version 1.5.5S- this applies to the table above as well. Merc gets 37xp for the first ice bat, 13xp for the remainder. Lich gets 60xp first ice bat, 20xp for the remainder. The Ranger gets 73xp for the first one, 25 for the remainder. The Sheperd gets 73xp, then 25xp.)
Inventory Objects[]
Experience for object use depends on difficulty % of the object. The numbers given are pretty inaccurate, because they vary with skills and tools used. They can only serve as examples.
World Objects[]
Experience for object use depends on difficulty % of the object. They give ~ 40-70 experience at first, ~20-50 later, even less on higher game difficulty (down to 7). The numbers given are pretty inaccurate, because they vary with skills and tools used. They can only serve as examples.