Hmm, so I saw the numbers in the new forge and wondered if they were hackable. I searched for the % of success rate by searching for the base success rate of 20% (going from 9 to 10) and adding and subtracting a sapphire I got from pvp, but I had no luck there for some reason. I forgot to switch to unknown value and just do the increase/decrease next scans until i switched ideas.
So what i tried was adding the one sapphire I had to increase the odds, and saw below it said "you have 1 sapphire", then you put it up and "you have 0 sapphires". Well I found that number easily, but you can't just change it to 20 while the forge is open, that number doesn't update on the fly and if you change it to 20 in Cheat Engine and put up your sapphire anyways, it just goes to zero, not 19 like I was hoping.
SIDE NOTE: just thought about finding that AoB maybe and changing it when the game loads BEFORE opening the forge, hmm. No gems will have to test it later.
So still having that value that counted my sapphires, I put in my sapphire and increased my odds by 2.5%. I checked cheat engine and sure enough the value said I now had 0 Sapphires, but I changed it to 2 anyways. That didn't change anything visually in the Forge but when I clicked and added Sapphire, it worked! Then it said I had -1 Sapphires, lol. Then I went back and the value was some weird ass number that I guess means -1, and changed that number to 2 again, and added another sapphire. I repeated that until I filled all 14 slots giving me a 50% success rate to raise my +10 to +11. I didn't think it would let me, assumed it would just tell me insufficient sapphires, but it let me click it, and the tower succeeded....
So below is a screenshot of me adding 14 Sapphires, when I only had 1. Notice it saying I have -13 Sapphires (broken image removed) Ok, so did that actually worked and I had a 50% success rate? Or did I just get lucky and the base 15% of going from +10 to +11 worked somehow? I think it worked, but there's a twist....
When I checked my bags after i was done making the ss, hoping to somehow still have the sapphire, I was missing a lot of items... The game took 13 things from my bags to take place of the pretend Sapphires. All my energy pots and some rebirth cards! Now is it worth it? Possibly. Does it work if you don't have 13 things in your inventory? No idea. Lots more testing to do, but I thought I'd share this interesting tidbit.