Game mechanics/Rings
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Ring Effects Edit
Ring  Affected Stat  Formulae 

Ring of Accuracy  Hero/ine's Accuracy  Accuracy Bonus = 1.4^{totalAccuracyBonus} or 1.4^{RingLevel} 
Ring of Detection  Hero/ine's Awareness  See: Table 
Ring of Elements  Debuff duration & resistance  Duration Reduction = 1 + level/(level+4) (if level>0); Resistance Probability = 1  3/(level+3) 
Ring of Evasion  Hero/ine's Dodge  Dodge Bonus = 1.2^{evasionLevel} or 1.2^{RingLevel} 
Ring of Haggler  Item purchase price  ??? (50% discount) 
Ring of Haste  Hero/ine's Speed  Speed Bonus = 1.1^{hasteLevel} or 1.1^{RingLevel} 
Ring of Herbalism  Vegetation drop chance  See: Table 
Ring of Mending  Hero/ine's regeneration  Regeneration = 1 HP per 10/1.2^{level} turns 
Ring of Power  Wands  Ring Level is cumulative to Wand Level 
Ring of Satiety  Hero/ine's Hunger  ??? (Delays Hunger) 
Ring of Shadows  Hero/ine's Stealth  See: Table 
Ring of Thorns  recoil damage  Randomly reflects damage between 0%100% to enemy 
Individual Rings Edit
Below are effects per upgrade, per ring
Ring of Accuracy Edit
Level  Accuracy 

0  1.0 
+1  1.4 
+2  2.0 
+3  2.7 
+4  3.8 
+5  5.4 
+6  7.5 
+7  10.5 
+8  14.8 
+9  20.7 
+10  28.9 
+11  40.5 
+12  56.7 
+13  79.4 
Ring of Detection Edit
(Not accounting for damage amplified by multiple enemies/sheep; only singletarget damage shown.)
Level  Search Area 

0  3x3 cells 
+1  5x5 cells 
+2  7x7 cells 
+3  9x9 cells 
+4  11x11 cells 
+5  13x13 cells 
+6  15x15 cells 
+7  17x17 cells 
+8  19x19 cells 
+9  21x21 cells 
+10  23x23 cells 
+11  25x25 cells 
+12  27x27 cells 
+13  29x29 cells 
Ring of Elements Edit
Level  Turns Rdc  Res % 

0  2  0 % 
+1  2.1667  25 % 
+2  2.25  40 % 
+3  2.3  50 % 
+4  2.3333  57.143 % 
+5  2.3571  62.5 % 
+6  2.375  66.667 % 
+7  2.3889  70 % 
+8  2.4  72.727 % 
+9  2.4091  75 % 
+10  2.4167  76.923 % 
+11  2.4231  78.571 % 
+12  2.4286  80 % 
+13  2.4333  81.25 % 
Ring of Evasion Edit
Level  Dodge 

0  1 
+1  1.2 
+2  1.44 
+3  1.728 
+4  2.0736 
+5  2.4883 
+6  2.986 
+7  3.5832 
+8  4.2998 
+9  5.1598 
+10  6.1917 
+11  7.4301 
+12  8.9161 
+13  10.6993 
Ring of Haggler Edit
Level  Rdc Price 

+1  50 % 
Ring of Haste Edit
Level  Speed  Turns 

0  1  1 
+1  1.1  0.9091 
+2  1.21  0.8264 
+3  1.331  0.7513 
+4  1.4641  0.683 
+5  1.6105  0.6209 
+6  1.7716  0.5645 
+7  1.9487  0.5132 
+8  2.1436  0.4665 
+9  2.3579  0.4241 
+10  2.5937  0.3855 
+11  2.8531  0.3505 
+12  3.1384  0.3186 
+13  3.4522  0.29..? 
Ring of Herbalism Edit
Level  Dewdrop %  Seed % 

+0 to 4  level+2 10  level+2 30

+5 to 14  level1 level+1  level+2 30

Ring of Mending Edit
Regen rate To Be Confirmed
Level  Regen Turns  Regen Rate 

0  10  0.1 HP 
+1  8.33  0.14 HP 
+2  6.94  0.20 HP 
+3  5.79  0.27 HP 
+4  4.82  0.38 HP 
+5  4.02  0.54 HP 
+6  3.34  0.75 HP 
+7  2.79  1.05 HP 
+8  2.32  1.48 HP 
+9  1.93  2.07 HP 
+10  1.61  2.89 HP 
+11  1.34  4.05 HP 
+12  1.12  5.67 HP 
+13  0.93  7.94 HP 
Ring of Power Edit
To Be Added
Level  Recharge Rate 

0  ? 
+1  ? 
+2  ? 
+3  ? 
+4  ? 
+5  ? 
+6  ? 
+7  ? 
+8  ? 
+9  ? 
+10  ? 
+11  ? 
+12  ? 
+13  ? 
Ring of Satiety Edit
To Be Confirmed
Level  Rdc Hunger Rate %  Turns (Full→Starving) 

0  100 %  300 
+1  90 %  333 
+2  80 %  375 
+3  70 %  429 
+4  60 %  500 
+5  50 %  600 
+6  40 %  750 
+7  30 %  1,000 
+8  20 %  1,500 
+9  10 %  3,000 
+10  0 %?  Halts? 
+11  0 %?  Halts? 
+12  0 %?  Halts? 
+13  0 %?  Halts? 
Ring of Shadows Edit
(Chance of being noticed at 4 tiles)
Level  Stealth  Sleeping Enemy Detection %  Wandering Enemy Detection % 

0  0  1/4 (25 %)  1/2 (50 %) 
+1  1  1/5 (20 %)  1/3 (33.3 %) 
+2  2  1/6 (16.7 %)  1/4 (25 %) 
+3  3  1/7 (14.3 %)  1/5 (20 %) 
+4  4  1/8 (12.5 %)  1/6 (16.7 %) 
+5  5  1/9 (11.11 %)  1/7 (14.3 %) 
+6  6  1/10 (10 %)  1/8 (12.5 %) 
+7  7  1/11 (9.09 %)  1/9 (11.11 %) 
+8  8  1/12 (8.33 %)  1/10 (10 %) 
+9  9  1/13 (7.69 %)  1/11 (9.09 %) 
+10  10  1/14 (7.14 %)  1/12 (8.33 %) 
+11  11  1/15 (6.66 %)  1/13 (7.69 %) 
+12  12  1/16 (6.25 %)  1/14 (7.14 %) 
+13  13  1/17 (5.88 %)  1/15 (6.66 %) 
Ring of Thorns Edit
Damage deflected = 0
to damageTaken
To Be Confirmed
Level  % to deflect dmg 

+1  50 % 
Ring Type Generation Probabilities Edit
Ring  Probability  

Ring of Mending  1/10
 10 % 
Ring of Detection  1/10
 10 % 
Ring of Shadows  1/10
 10 % 
Ring of Power  1/10
 10 % 
Ring of Herbalism  1/10
 10 % 
Ring of Accuracy  1/10
 10 % 
Ring of Evasion  1/10
 10 % 
Ring of Satiety  1/10
 10 % 
Ring of Haste  1/10
 10 % 
Ring of Elements  1/10
 10 % 
Ring of Haggler  0
 0 % 
Ring of Thorns  0
 0 % 
Ring Generation Probability Edit
It is a very complex thing to calculate, but to cut things short, it's about 15 %.
The chance of not getting a ring will be:
Pr(3 items)×Pr(ring')^{3} + Pr(4 items)×Pr(ring')^{4} + ... + Pr(7 items)×Pr(ring')^{7}

(Pr(ring') = probability of not getting a ring in a random drop = 1 2/179 = 177/179)
= 54/81*(177/179)^3 + 18/81*(177/179)^4 + 6/81*(177/179)^5 + 2/81*(177/179)^6 + 1/81*(177/179)^7
= 0.96
Therefore, the probability of getting a ring, at a depth, from a random drop, is about 4 %.
However, that is not quite right, since every time an item type is spawned, the probability of getting that item type again is halved (the chances are reset every depth); thus, the probability of a ring would be a bit more, but it will be ignored for now because the math becomes too complicated to easily comprehend.
Furthermore, that is only the chance of getting a ring from a random drop, there is also the chance of getting a Vault..
Vault Probability Edit
In a vault, the probability of no rings, is: 2/3×1/2 + 1/3×1/2×1/2 =0.42
. Thus, 58 % chance of at least one ring in a vault.
The total chance of getting a ring would be:
Pr(ringFromRandomDrop) + (1Pr(ringFromRandomDrop)) × Pr(vaultGettingGenerated) × Pr(ringInVault)
=0.04 + (10.04)×Pr(vaultGettingGenerated)×0.58
=0.04 + (0.56)×Pr(vaultGettingGenerated)
For now, the exact probability of getting a vault generated is unknown, but it's estimated to be 1/5. Thus, the probability is: =0.04 + 0.56×0.20 = 0.152 = 15 %
. So, in a single game, you would expect to get about 19 × 0.152 ≈ 3 rings
(+1, for Ambitious imp).
However, all of that uses some wild assumptions, so a better way to find that out, is to say that a player tends to get about 3 rings a game. Thus, the chance per depth is:
≈ 3/19 = 0.157 = 16 %
.
Curse Status Edit
 Main article: Curse