This game is very fun and addictive.
I hope there is more content, and a Steam version.
The problems I've had so far are as follows:
1. during the stamp organizing process, I performed an unsure action that caused the stamp organizing to get stuck and a parcel to become always selected. There are only a few stamps left on the screen that can be manipulated, most of the stamps cannot be manipulated, and moving certain components may cause the animation of the stamp sorting to continue, or it may cause the component itself to become inoperable. I managed to complete the level, but one of the stamps remains on the screen and inactive for the rest of the process.
2. You can only purchase a maximum of two packs of Mystery Stamps. Please hide the purchase option when the limit is reached, or just remove the limit.
3. the result of the stamp sorting is random, it would be better if the mystery stamps can be sorted to the bottom.
4. the values may need to be balanced further, mailing a $0.25 parcel that I can earn $2 from is a strange thing when you think about it.
5. the game currently goes back to august 1st after august 31st even though I tried to get to september 1st in endless mode.