All along, our game didn't have mid-game progress saving, and the game was just too difficult.
After a long period of development efforts, we finally have progress saving implemented. If you exit the game halfway, the game will automatically save your current progress. The next time you enter the game, you can simply continue your search from where you left off!
Notably, after completing the game, if you enter the game again, the completed levels will automatically reset, starting a new round of searching.
Additionally, we've fixed several minor issues. Thank you all for your support!