Proof:
https://preview.redd.it/xb9iqs5zlob51.png?width=1416&format=png&auto=webp&s=c952b5e5d5a6e582de865619558eac4c29410008
3 days ago, Revenue Universe had their double campaign and Huuuge Casino worth jumped from 3000 to 6000. It may have been higher on other sites or wall, but this was the first time I saw it this high. I actually failed this offer a month back on IOS for 5200 because I ran out of chips at around level 49 and just decided to quit. I decided to bite the bullet on this one, despite my failure, and decided to retry it (this time on Android). To my surprise, 3 days later, I was able to reach level 200. I have also included tips at the bottom of page for anyone who just want to know stuff like how to not run out of chips, when to use your lottery tickets, how much to bet, etc.
IMPORTANT EDIT: This is unconfirmed because I haven't checked on it but according to a few users, Huuuge Casino and other similar casino games have a small safeguard secret prize before level 50 that grants you chips during some level ups when you are under 20 million so it is almost impossible to lose all your chips. That way, you can max bet all the way to level 50 and if you are lucky, you may end up with a few hundred million of chips by then (again I haven't confirmed this yet, but I'm currently doing the Billionaire Casino offer (which is literally a carbon copy of Huuge Casino and vice versa in terms of slot machine, layout, etc) and this seems to be a thing. In terms of the hundred of millions of chips part, that is all dependent on Jackpot luck so take that part with a grain of salt).

Some stats

Time it took me	62 hours. If you did the simple math, that means of the 3 days I used to finish this offer. my android phone was on most of the time. The only time my phone wasn't on was during the last few hours when I was asleep because it turned off while I was spinning on Huuuge Diamond since I didn't want the offer to credit in the middle of the night. However, there is a catch. I used an auto clicker and bought the chips necessary to complete the offer. My phone didn't get all that hot during the 62 hours it was on, but just in case, if you are going to be like me and keep a phone on for 62 hours straight, be sure the phone is lying on something cool like a fan so the phone doesn't overheat.
Other apps used	Yes, I used an auto clicker. Otherwise, it would've taken a lot longer, more attention, and mind-numbingly frustrating. More info about that down below. For the autoclicker, I just downloaded the one that was the first result off of the play store. It was very simple too use.
Amount of chips used	Overall, I had about maybe 1.5-1.6 billion chips in total and used about 1-1.1 billion chips to get to level 200. I don't know if I was lucky or not, so this number can be lower or higher depending on luck but if you buy the 6.99 or 9.99 chip pack, there won't be much of a problem.
How much money spent	I spent on the 9.99 beginners pack that gave 1.3 billion chips, making for a 50 dollar profit. According to other posts I've seen, there seems to be a 6.99 pack you can get once you hit level 100 which should be enough chips to get to 200, but I never received the deal for some reason and I didn't seem to be the only one. Was it worth it? If you are impatient like me, using 10 dollars instead of spending days grinding out 1 billion chips sounds worth it in my book. However, for those who do not want to spend money, this offer can still be easily completed without spending money. Just be prepared to grind out a little over a billion chips.

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My Level Breakdown

Here's a breakdown of what I did, but if you've read other posts regarding Huuuge Casino, this is mainly going to be repeat information.
Level 1-50 (Or when you have 100-125 million chips): Huuuge Diamond slot.
EDIT: This section maybe obsolete if the secret prize is a confirmed feature. If that is the case, just max bet to level 50, but the amount of chips you will receive will vary. If you want to stay safe, then just 10k bet. In exchange for time, you'll have a more stable end outcome.
This is where I spent my time for the first 50 levels. As to the reason why, on Huuuge Diamond, you can auto spin indefinitely. Nothing will stop the autospin, not even the level up notifications or the charm packs they give you every stupid milestone level up. I realized this when I forgot to check my phone after 6 hours and it was still going at it, so I left it over night and in the morning, it was still spinning. I would say it took me 30 hours or so to get to level 50 (just my estimate since I wasn't really diligently timing everything)
To the people who already finished this offer, they may be wondering "why 50 and not 65? 65 is when the Singapore Roulette opens up." The answer to that was because when I hit level 50, I had about 143 million chips (how I got this much will be explained in the tips, but it's honestly really simple. I never went over a 10k bid) and xp from slots is extremely slow. That's why once you hit maybe 125 million chips or so, it is good to switch to the Melbourne Roulette. By the way, SAVE YOUR TICKETS UNTIL YOU REACH LEVEL 100. According to another post I read, the rewards from the lottery is increased once you hit level 100 so it's best to save your lottery tickets until then.
Level 50-65: Melbourne roulette. Go to the roulette menu and hold down on the Melbourne roulette to start a private room. Bet half on red and half on black. That way, you will only lose if it hits the only 2 greens on the roulette. The max bid here is 1 million, so with over 100 million chips, you shouldn't be hurting for chips. This part, unlike the slots, should go by like it's nothing (I don't remember how long, but probably 1-3 hours). This was also around the time I started using the auto clicker because it will become tedious to tap on re-bet and ready every 5 seconds. With the autoclicker, for these 15 or so levels, you don't have to pay ANY attention if you don't want to. But once you reach level 65, it's time to move onto the final step.
Level 65-200: Singapore roulette. Around this time, I lost maybe 10 million chips from 50-65, so I was down to 133-134 million. Over here, max bet is 10 million, so put 5 million on red and 5 million on black. This was enough to get me to level 120 surprisingly, but at level 100, I started spinning in the lottery so I received more chips there and a 24 hour 2x experience bonus so that should also be taken into account (I also had a small unlucky streak where it green 2 times in a row a couple of times within 7 or spins so that was frustrating...). At level 120, I spent 9.99 to buy a pack that had 1.3 billion chips in. For those who do not want to spend money, this is where the grind begins for 1 billion chips.
Earlier on in these levels, it will be easier to level up and it will take longer to level up as you go higher, but honestly, it isn't that bad until it level 190. I don't know if it was just me, but level 190 to 200 felt waaaaay longer than level 180-190. For those of you curious, from level 199 to level 200, it took around 22-25 minute. In terms of leftover chips, I had 680 million left.

Tips

Join a good club! For those of you who don't want to spend money and for those who do, this is one of the most important rules as you can get a lot of free chips easily from your club members jackpots. I was able to get maybe 60 million or more just from collecting off the club wall because my club was fairly active. While searching for a club, filter your search options to Club level 20, anyone can join, and club members between 90-100. Even if there is only 10-15 members active in the club out of 100, that is still a good club to be a part in.
Do not use your tickets until you reach level 100. Your winnings from lottery will increase once you hit level 100. After using your tickets, you will most likely get a 2x exp bonus as one of your rewards. Use this time well (From level 100-200, I got 3 2x exp bonuses. With all the lottery tickets accumulated up till this point, you\re bound to get at least 1).
Probably obvious, but do not bet more than 10k on Huuuge Diamond. I can not stress this enough. The reason why I lost all my chips the first time I did this offer was because I was cocky and kept winning big with 50-100k bids, but that soon went down the gutter the higher level I got. Bet low, win high.
My slot machine of choice was Huuuge Diamond, but I think, honestly, any machine with a 10k bid can work, but I am not sure on this. I think this is also a good one to grind chips. I think the max jackpot, if you don't get the main jackpot on the top of the screen, is 1.6 million with a 10k bid, so it is still respectable. If anyone else knows of a better machine to grind on, please let us all know.
This website https://gamehunters.club/huuuge-casino/share-links gives you free chips if redeemed on the device you are playing Huuuge Casino on. I honestly did not need to use this site as the chips I bought were enough and the site lags my already super slow phone so it was a hassle to click on the reward, open the app to claim, and switch back.
I may have forgotten to add some things, so if anything comes up, I'll be sure to update. This was meant to give people a sort of guideline to an offer that I have seen given some people frustration (me included because this is the second time I did it, first time being unsuccessful). Once I hit 200, I was instantly credited with no pending. For those willing to spend for the $6.99 or $9.99 pack, this offer can be completed between 60-70 hours, give or take. For those who do not want to spend money, I would say to double the expected time, but finishing in 2 weeks is still doable. Good luck everyone and I hope this guide lightens a bit off your shoulders.
P.S. Sorry for the long guide. I talk a lot lol