I am hearing some rumors being reported today after seeing a spike in chatter within the gaming community on today. I have not seen the third-party game tracking tools show this much rumor in a long time. I will say the tracking tools are way more heated than the chatter I am seeing, so something might be off here. Again, I saw some initial chatter from within the gaming forums and on this site starting on today.  Now, I decided to cover it on everyday even if the chatter was not at the levels that would warrant me posting something.
To be clear, Wendgames' radar has not confirmed any release is officially going on.
Mod, cheat or hack tracking tools:
Let's start with what the tools are showing:
Bila sensor:

Souma sensor:

So most of these tools are incredibly heated, signaling that they are showing available mod, hack or cheat for the game.
Wendgames chatter:
Here is some of the chatter from various comments on this site and facebook groups since the release:

Holy shit this is the biggest gaming news of the year

I surprisingly knew about this game's existence before this!

From someone who actually played it, it's fine, just a pretty average  game. Unless you're chomping at the bit for new experiences, if it looks interesting to you just play the first one.

Let's make a little summary for the game:
GAME INFO
Name of Game: FillIt-Learn KOREAN with KPOP
Version: 0.8.0

Name of the cheat, mod, hint, tip or hack:
-Unlimited Money
-Mod Menu
-Money increases instead of decreasing
-Massive attack
-God mode
-Free Purchases
-Free Shopping
-Enemy does not attack
-Weak enemies
-Unlimited coins/hearts/gold/gems
-Dumb Enemies
-Free Store
-Stats Boosted
-Mega Mod
-High damage/No Shake No Recoil
-mod rewards
-Damage & defense multiplier
-Game speed multiplier
-Unlimited Ammo/no reload/No Recoil
-radar hack/Infinite money
-Unlocked/all levels unlocked

Game description:
Korean lyrics learning game created by K-Pop Idol Community CHOEAEDOL
Listen to your favorite K-pop music and fill in the lyrics!

1. Guess K-pop lyrics and learn Korean language in an easy and fun way!
Help you learn and memorize Korean words by guessing K-pop lyrics.
Listen to K-pop, read and pronounce the lyrics to help you learn Korean language.
Everyone can enjoy “Fillit”.
An easy to play game for anyone interested in K-pop.
Sing along to your favorite K-pop songs to learn K-pop lyrics.

2. Find out my Korean language level among K-pop fans worldwide!
Compete with other K-pop fans to climb the global leaderboards!
Compete with your friends or family for rankings!

3. Check out the ranking of K-pop artists and songs! Play now to make your bias NO.1!
Just play your favorite song and help your favorite artists or songs to the top.
Learn Korean language while making your favorite artist NO.1.
Check the ranking of each artist and song in real time.

4. Play Fillit anytime, anywhere!
It’s easy to play every day!
Play Fillit during your breaks, on public transport, before bed, or whenever you have a spare moment.
Fillit can also help you to learn Korean if you listen to K-pop a lot.
If you want to memorize K-pop lyrics, you can play any song in Fillit right now.

5. Fast new song updates!
With regular song updates, you can learn the lyrics to the latest K-pop songs faster than anyone else.

Includes tons of songs from K-pop artists!
BTS, EXO, SEVENTEEN, STRAY KIDS, ENHYPEN, TREASURE, TXT, TWICE, BLACKPINK, IVE, (G)IDLE, AESPA, NEWJEANS, LESSERAFIM,MONSTA X, ATEEZ, ASTRO, SUPERJUNIOR, BTOB, N.SSIGN, THE BOYZ, ZEROBASEONE, SHINEE, BOYNEXTDOOR, &TEAM, RIIZE, REDVELVET, ITZY, STAYC, ETC

* The current version is for beta testing and play data may be initialized without notice.

FillIt-Learn KOREAN with KPOP MOD APK Version 0.8.0

Manual Steps:
1. Install Modded APK
2. Play

Download Now
In any case, the best mod, cheat or hack for now comes down to these tips:

1. The first cheat or exploit is to not skip the tutorial, even if you're an advanced player and this is your second, third, or fourth alt account. The beginner's tutorial gives you lots of free stuff and rewards, which are some of the most valuable items in the game.
2. Keep watching the ads and collecting more and more daily currency rewards.
3. Play daily events for more chances to get better currency.
4. Practicing to get better time in PVE or offline mode.
5. Don't skip any unleashed events.
6. Use ad packs from the store to get currency. And free packs can be obtained every certain number of hours.
7. Watch YouTube or Twitch videos: gamer's gameplay style and tutorials.
8. Play against many different opponents with many different gameplay styles.
9. Join the game community on Discord, Reddit, Facebook, or other social media platforms where you can share your gaming experience.
10. Are you a competitive online mobile gamer? The secret to becoming a top mobile gamer is to first have at least a medium-range phone or a top-of-the-line phone. Without a good device, you will never be a good gamer. Next, you need a superfast internet connection. If you want to do exploits against other gamers online in real time, you need incredible internet connectivity, or else lag will become your best friend when your ping goes up to over 300 ms. And finally, you need to be me, Wendgames, the greatest mobile gamer the world has ever seen. If anyone else tells you anything else, they're lying. Skills only come through persistence with great devices and fast connectivity to react appropriately against enemy players.