XP boosts, how helpful are they?
| Level | Base |
10% | 20% | 30% | 40% | 50% |
| 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2 | 200 | 220 | 240 | 260 | 280 | 300 |
| 3 | 500 | 550 | 600 | 650 | 700 | 750 |
| 4 | 900 | 990 | 1080 | 1170 | 1260 | 1350 |
| 5 | 1400 | 1540 | 1680 | 1820 | 1960 | 2100 |
| 6 | 2150 | 2365 | 2580 | 2795 | 3010 | 3225 |
| 7 | 3025 | 3327.5 | 3630 | 3932.5 | 4235 | 4537.5 |
| 8 | 4025 | 4427.5 | 4830 | 5232.5 | 5635 | 6037.5 |
| 9 | 5150 | 5665 | 6180 | 6695 | 7210 | 7725 |
| 10 | 6400 | 7040 | 7680 | 8320 | 8960 | 9600 |
| 11 | 7775 | 8552.5 | 9330 | 10107.5 | 10885 | 11662.5 |
| 12 | 9275 | 10202.5 | 11130 | 12057.5 | 12985 | 13912.5 |
| 13 | 10900 | 11990 | 13080 | 14170 | 15260 | 16350 |
| 14 | 12650 | 13915 | 15180 | 16445 | 17710 | 18975 |
| 15 | 14525 | 15977.5 | 17430 | 18882.5 | 20335 | 21787.5 |
| 16 | 16525 | 18177.5 | 19830 | 21482.5 | 23135 | 24787.5 |
| 17 | 18650 | 20515 | 22380 | 24245 | 26110 | 27975 |
| 18 | 20900 | 22990 | 25080 | 27170 | 29260 | 31350 |
| 19 | 23275 | 25602.5 | 27930 | 30257.5 | 32585 | 34912.5 |
| 20 | 25775 | 28352.5 | 30930 | 33507.5 | 36085 | 38662. |
This is the Lua table that defines how much experience you need to get to a given level. As you can see, the numbers increase rather quick... but we can use this to figure out exactly how valuable something is. For instance, the first experience upgrade from the citadel gives +10% experience.
EDIT: I have now made it into more of a table. The BASE columns shows how much XP you would have at that point in the game without an XP bonus. Each column increases XP gain by 10%. Color dictates where you get full bonus levels, where Orange = 1, Red = 2, and Purple = 3.
Note that +10% Experience never gives you a full level, the entire game. 20% Experience will never get more than 1 level ahead, and will do so at about level 10, etc etc.
These numbers assume the fictiotious scenario WHERE YOU HAVE THE XP BOOST FROM THE BEGINNING OF THE GAME. This is not something you can actually with anything but the brilliant bauble. These are actually then higher than the actual in game numbers you could possibly get.
Just thought people might like to know