User:GuyPerfect
Chances for Things
Graves
Graves use the following algorithm for determining what you dig up:
Rolling a non-trinket or a trinket each has a 45% chance, since it's 50% of the remaining 90%.
There's only the one kind of Ghost, so it spawns every time when a Ghost is rolled:
Prefab Chance Global 
Ghost 100.00% 10.00%
Ghost formula:
100% * 10% global
Non-trinkets are weighted:
Prefab Weight Chance Global 
Nightmare Fuel 1 7.69% 3.46% 
Life Giving Amulet 1 7.69% 3.46% 
Gears 1 7.69% 3.46% 
Red Gem 5 38.46% 17.30% 
Blue Gem 5 38.46% 17.30%
The total of the weights is 13, so the formula is as follows:
weight / 13 * 45% global
Trinkets are not weighted:
Prefab Chance Global 
Ball and Cup 8.33% 3.75% 
Dessicated Tentacle 8.33% 3.75% 
Fake Kazoo 8.33% 3.75% 
Frazzled Wires 8.33% 3.75% 
Gord's Knot 8.33% 3.75% 
Gnome 8.33% 3.75% 
Hardened Rubber Bung 8.33% 3.75% 
Lying Robot 8.33% 3.75% 
Melty Marbles 8.33% 3.75% 
Mismatched Buttons 8.33% 3.75% 
Second-Hand Dentures 8.33% 3.75% 
Tiny Rocketship 8.33% 3.75%
There are 12 trinkets, so the formula is as follows:
1 / 12 * 45% global
Large Ornate Chest
Defeating an Ancient Guardian will spawn a Large Ornate Chest and populate it with items. Items go into the chest following this algorithm:
- A list of slot fillers is processed according to the chest's capacity
- The list contains 10 entries, which specify one or more items
- The chest can hold 9 items
- One of the entries is eliminated from the list
- Each entry in the list is added to the chest if a random roll passes
- If the entry specified more than one item, only one of them is selected at random
The source list of entries for slot fillers is as follows:
| Count | Chance | Items | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Prefab | Chance | Global | |||||||
| 1 | 33.00% |  |
Thulecite Suit | 100.00% | 29.70% | ||||
| 1 | 33.00% |  |
Thulecite Crown | 100.00% | 29.70% | ||||
| 3 | 25.00% |  |
Thulecite Club | 33.33% | 7.50% | ||||
 |
The Lazy Explorer | 33.33% | 7.50% | ||||||
 |
Star Caller's Staff | 33.33% | 7.50% | ||||||
| 4 | 50.00% |  |
Fire Staff | 25.00% | 11.25% | ||||
 |
Ice Staff | 25.00% | 11.25% | ||||||
 |
Telelocator Staff | 25.00% | 11.25% | ||||||
 |
Pick/Axe | 25.00% | 11.25% | ||||||
| 1 | 75.00% |  |
Thulecite | 100.00% | 67.50% | ||||
| 1 | 50.00% |  |
Thulecite Fragments | 100.00% | 45.00% | ||||
| 1 | 75.00% | |
Nightmare Fuel | 100.00% | 67.50% | ||||
| 3 | 66.00% | |
Red Gem | 33.33% | 19.80% | ||||
|
Blue Gem | 33.33% | 19.80% | ||||||
 |
Purple Gem | 33.33% | 19.80% | ||||||
| 3 | 45.00% |  |
Yellow Gem | 33.33% | 13.50% | ||||
 |
Orange Gem | 33.33% | 13.50% | ||||||
 |
Green Gem | 33.33% | 13.50% | ||||||
| 1 | 33.00% | |
Gears | 100.00% | 29.70% | ||||
There are 10 entries in the list, but only 9 of them can be selected to fill the slots of the Large Ornate Chest. Therefore, each entry's likelihood of even being considered for any given Chest is 90%. Within them, for entries with more than one item, the item is selected randomly from the group available.
Putting it all together, each individual item's likelihood for appearing within a Large Ornate Chest can be calcualted with the following formula:
90% * chance * (1 / count)