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: Castaways
Version: 1.7.0 Today: Free

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:
Build, explore, and survive alone or with friends on a stranded island where you must be resourceful and creative with nothing but your wits and a few basic supplies. But don’t worry! You’re not alone – there are millions of other castaways on other islands waiting to befriend you, trade with you, and help you build a new life.

With Castaways, you’ll dive into the world of fishing and farming for food, explore exciting islands to gather resources, build your own house, craft tools, and discover technology to go from just surviving, to thriving!

Climb the global leaderboards and become the most advanced island!

GO FISHING
Craft a fishing rod and play mini games to catch a variety of different fish, junk, and treasures from the sea that can be used to craft lots of other useful tools.

GO FARMING
Collect rare seeds, fill your watering can, and start cultivating a massive farm of tropical plants and fruit trees that you can use for food, composting, and more.

GO MINING
Venture into dark mines and compete with other players to collect scarce resources such as coal and iron to build advanced technology and tools that help you progress on your island

BUILD YOUR ISLAND
Let your creativity run wild and build anything you can imagine! Whether you want to build a cozy beach house or a towering castle, the possibilities are endless! Add unlimited friends to your island and work together to build a massive empire!

TRADE WITH PLAYERS
Buy items you need or sell your hard earned items on the grand exchange! A global marketplace in the game that lets you earn valuable dabloons. Build a trading empire and become the richest castaway of all the islands!

EXPLORE NEW ISLANDS
Explore a variety of immersive games created by others, go on epic adventures, compete against your rivals, form trading partnerships, or simply hang out and chat with your friends online.

LEVEL UP YOUR ABILITIES
Sacrifice the resources you gain at altars to earn XP and unlock special abilities as you level up that give you a competitive edge over other islanders.

DISCOVER ADVANCED TECHNOLOGY
Use dabloons to purchase Silos, Processors, and Containers that let you build factories to automate the production and transport of resources on your islands.

JOIN THE COMMUNITY
Join millions of players and become a part of the thriving Castaways community. With cross-platform support, you can play on your computer or mobile device, and connect with other players no matter where you are.

Please Note: A network connection is required to join. Castaways works best over Wi-Fi.

Castaways MOD APK Version 1.7.0 Today: Free

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.