# Single gem explosion needs a buff

**URL:** <https://community.gemsofwar.com/t/single-gem-explosion-needs-a-buff/45545>\
**Category:** Feature Requests and Game feedback\
**Created:** [September 9, 2018, 4:01am UTC](https://community.gemsofwar.com/t/single-gem-explosion-needs-a-buff/45545 "2018-09-09T04:01:27Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![Mithran](https://sea1.discourse-cdn.com/flex019/user_avatar/community.gemsofwar.com/mithran/32/18064_2.png) [@Mithran](https://community.gemsofwar.com/u/Mithran)\
**Post date:** [September 9, 2018, 6:36am UTC](https://community.gemsofwar.com/t/single-gem-explosion-needs-a-buff/45545/8 "2018-09-09T06:36:39Z")

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> [@actreal](#):
>
> My understanding is that GoW uses Banker’s Rounding for everything

For science, I checked this on delve chests. They use simple rounding, not Banker’s Rounding. From extensive testing, I’m fairly certain the number of drops you get is determined by chest level, and they round _each_ drop, not total drops.

To double check, I had a level 4 chest with exactly a 2.5 modifier and ran away from the delve, producing:

 ![image](https://us1.discourse-cdn.com/flex019/uploads/gemsofwar/original/3X/1/4/141aff02e1332268cf0e0d244257aa39cb8dcfcc.jpeg)

Which is 1 legendary ingot, 1 mythic ingot, 20 glory, and 5 shards, each multiplied by the treasure modifier and rounded. In this case, 0.5 being rounded _up_ to an _odd_ number three times. I have another drop with a 3.5 modifier from earlier that yielded multiplies of 4 ingots, so clearly no bias to odd or even here.

But I’m still fairly convinced they didn’t even really consider low yield explosions here. After all, their explanation for the nerf was:

> [@4.0 Patch Notes](https://community.gemsofwar.com/t/4-0-patch-notes/45233/1):
>
> We originally decreased mana gained from 100% to 70% back in 2015, due to the amount of mana gain from the spells was outscaling any other means to gain mana in the game and causing troops to be able to chain their spells.
> 
> In the past few months, as Magic has continued to scale higher and higher, this same behaviour has reappeared, with some explosion spells being able to power up mythic troops in a single cast (from 0 mana). As such we have reviewed the mana gain from exploders and after a long experimental time, decided to reduce the mana gain down to 50%. Mana gain from any gem cascade after an explosion will still get 100% of the mana (and it turns out that is often where half of your mana comes from).

The last time magic increased was, what, January 2017? Unless we are counting the one point for Zuul’Goth owners. Exploders dominance couldn’t possibly be related to cascades prevalent on the Unity engine or even cascades related to oversaturation of storms. Nah, couldn’t be. Has to be all those points of magic we got in the past few months.

> [@aluoaniki](#):
>
> If it’s banker’s rounding in the first place, it would always be 0 mana gain on single gem destroyed by explosion, which isn’t the case at all.

That isn’t how Banker’s Rounding works. Banker’s Rounding only differs from “standard” (“half up”) rounding for where to round decimal values of _exactly_ 0.5. Where the “standard” form is “round **half** up”, Banker’s Rounding rounds **half** numbers toward the nearest even number. Which is why I specified the only numbers of exploded gems where Banker’s Rounding would have differed from “standard” rounding with a 0.7 explode modifier (without disease, since I’m not sure if disease rounds as another step or not) is 15 (11 with standard round up, 10 with bankers rounding) and 35 (25 with standard round up, 24 with bankers rounding). Every other multiple that lands on 0.5 that is _possible_ on a single board without being matched away results in it _already_ being rounded toward an even number (which is really only 5 and 25, 45 is not feasible).

Edit for bump. Didn’t mean to kill this topic. Single gem explode nerf is nonsensical with respect to both the _stated_ reason for the exploder nerf and what _actually_ caused (in many cases still causing) _mass_ exploder dominance and should be addressed. I know thats bare minimum probably 3 months way, but if it isn’t being discussed **now** , it will probably _never_ happen.

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