Having a single rusted key allows you to open rusty lockboxes, but will usually give you white items. Having more of them increases your chances at green or even red items, but I don't know at what rate. Testing a run with 1 key, I got 5 white items in a row, while i got 5 red items in a row on a run with 99 keys, but this just confirms that there is a difference, not the rate that the chances change at.
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How did you get 99 keys?– GnomeSliceApr 12, 2019 at 19:49
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@HalfEmpty Either it was a really really long run, or (more likely) they used a Shrine of Order, which "condenses" your items into a single kind.– Mage XyApr 12, 2019 at 20:54
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1Actually, a third option, I used cheat engine. Mostly because getting 99 of anything by hand takes forever.– JonathanApr 12, 2019 at 21:53
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@Jonathan You probably could have bypassed the need for that as well. I believe that RoR2 has a built-in console where you can enable cheats and give yourself items. Either that or I completely misunderstood a conversation on Discord I guess.– JMacApr 17, 2019 at 13:27
1 Answer
See the wiki for rusted key. Based on the scaling it is functionally impossible to get 100% chance for legendary. However for 100 keys, it goes up to 80%, which is solid. With 5000 keys, the chance for legendary is 99.60%.
The full table from the wiki looks like so:
Keys | Common | Uncommon | Legendary
---- | ------- | -------- | ---------
1 | 79.21% | 19.80% | 0.99%
2 | 64.52% | 32.26% | 3.23%
3 | 53.69% | 40.27% | 6.04%
4 | 45.45% | 45.45% | 9.09%
5 | 39.02% | 48.78% | 12.20%
6 | 33.90% | 50.85% | 15.25%
7 | 29.74% | 52.04% | 18.22%
8 | 26.32% | 52.63% | 21.05%
9 | 23.46% | 52.79% | 23.75%
10 | 21.05% | 52.63% | 26.32%
15 | 13.22% | 49.59% | 37.19%
20 | 9.09% | 45.45% | 45.45%
50 | 2.23% | 27.93% | 69.83%
100 | 0.66% | 16.56% | 82.78%
1000 | 0.01% | 1.96% | 98.03%
5000 | 0.00% | 0.40% | 99.60%
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Great. Would you be able to post the whole chart from the wiki here?– JonathanApr 12, 2019 at 21:56
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2Nice edit Kroltan. I looked for that graph but couldn't find it. Apr 14, 2019 at 16:13
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