The endgame of Castaway Home Designer requires an excessive amount of grinding and mostly waiting. Follow the tips in this guide to cut hundreds of days returning to collect your money to a handful. You just have to leave your game running for a few days.

The total cost of buying all the clouds/regions in the game is ~52.985B.
The total cost of buying all the houses is ~392.866B.

Each cloud and group of houses costs roughly 2.5x more than the last one.

(The individual houses follow a rough pattern inside the group: 9%, 13%, 18%, 25%, and 35% for groups of five.)

Each heart point in a house is worth 1.5k per hour. We can use the boosts glitch to increase this to 75k per hour, but only during a single, uninterrupted session. (Check the Steps section below for the boosts glitch.)

Switch to the Ratings View in the game and sum up your heart points to calculate your hourly profit. Take the total heart points and multiply them by 75k (if you're using the glitch).


Reaching about 500 million per hour isn't too difficult. This is about 67 houses at 100k heart rating (6,700 total heart points).

But even 500m adds up to only 4 billion every eight hours. This means a bare minimum of 63.6 continuous hours to buy the final cloud/region. The final group of houses will take 785.7 hours (33~ days).

Now imagine not using the 50x glitch.

You must reset your island. It's incredibly difficult to earn enough money, card packs, or items to reach the end of the game without doing it at least a few times.

Resetting allows you access to cheaper items and packs while retaining your inventory and pearls. And you can use a resetting glitch to achieve a permanent 50x multiplier -- as long as you keep the game running. This makes up for any progress you might lose by resetting.

Building up your supply of items will help you reach a high hourly profit the fastest. Please read my other guide for the quickest method, which will get you comfortable with resetting:

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1917819235
I would recommend doing this until you have almost all the items in your catalog. Buy exotic and very rare items, then reset when the prices grow to unattainable levels.

I've compiled a list of the items based on how valuable they are across a variety of houses. Buy these in high quantities through resets to achieve high heart ratings on most properties easily.

The number represents the number of houses I found they worked in.

• 7: Toy Plane, Dolphin Statue (pink)
  
• 6: Scarecrow, Sand Castle, Monolith, Knight Statue, Club Jersey, Blue Outfit
  
• 5: X-ray, Wheat Fishfood, Soccer Cup, Slate-Pencil Urchin, Love Balloon, Leprechaun, Fig Wasp, Djembe, Cupid Statue
  
• 4: Owl Statue, Large Chandelier, Heart Badge, Elderberry Beetle, Maple Tree (Easter), Oak Tree (Easter)
  
• 3: Yellowfin Tuna, Soda Cabinet, Royal Couch, Iron Lantern, Ice Wall Middle, Golden Can, Celtic Grave, Axe Badge, Fence Outer / Fence Corner (winter), Orange Daisy, Sports Car, Easter Egg, Quill, Snowdrop Pot
  
• 2: Yellow Silken Scallop, Yellow Daisy, Yellow Bow, Wreath, VIP Badge, Veiled Statue, Tea Table, Sweets Tower, Sunflower, Star Window, Snow Lantern, Sci-fi Stool, Pumpkin Cart, Prison Bars, Porthole, Polka Dot Rug, Mothers Drawing, Mothers Cake, King's Crown, Inspector Badge, Foot Rest, Flagpole, Fireworks, Feeding bowl, Drinking Bowl, Contrabass, Chestnut, Blossoms Pot, Bat Lantern, Armchair

Use these in combination with my Likes / Dislikes / Objective guide's recommended items to decorate your houses quickly for maximum revenue.

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1916344138

Don't bother with floors and wallpaper. They can give you a nice boost in some houses, but they will rarely contribute enough to justify skipping a more versatile exotic item. You'll earn plenty from card packs anyway.

Purchasing houses (up to a point) will increase your revenue, even if you don't decorate it -- as long as they have some amount of heart points. Avoid houses that come with zero heart points unless they can be easily decorated.

This is a list of houses that are very hard to decorate. Only buy them if it's early into your game and you can use the extra revenue.

• Zen State Library - ❤️ 8.89k
  
• Palace Garden - ❤️ 2.79k
  
• Mars Mission Test Site - ❤️ 1.8k
  
• Red and White - ❤️ 900
  
• Back to school - ❤️ 0
  
• Japanese Minimalism - ❤️ 0

1. Recollect all your items from houses
   
2. Activate your boosts (except House Party)
   
3. Reset your island before the boosts expire for a permanent 50x multiplier
   
4. Buy houses and begin filling them for max heart rating
   
5. Reach an acceptable level (over 500m per hour) and leave the game running for a few days

Dedicate a few hours early on to decorating your houses -- your efforts will compound. Follow my Likes / Dislikes / Objectives guide and it shouldn't take too long.

Buy late game houses very cautiously; a single property can cost several days of profit. Check to see how much revenue it would provide and whether you have the items to fill it. Most houses after the fifth-to-last cloud fail any cost analysis.

House Parties can earn you a quick 90m or more at higher levels, but they're not particularly valuable. They offer about 12% of your hourly profit, or around 7 minutes. You would save about 2h50m if you did this every hour of the day.

Closing the game ends the multiplier glitch, meaning your progress will be slowed by 50x. It would likely be best to start over at that point.

Expect to leave your game on for at least four days for the final cloud, and expect a full month for all houses.

I managed to get up to 700m an hour. It will likely be difficult to get significantly higher than that unless you get lucky with your randomized houses.