Hi everyone, I'm the creator of this game, and I want to extend my heartfelt thanks for purchasing it. Even though it's just the first day of release, your positive feedback has made me incredibly happy. I'm pleased to announce that I've addressed two issues in the game and have updated it to Version 1.0.06: 1. Challenge Mode Difficulty: Many players found the Challenge Mode too difficult. To improve this, I've made a couple of adjustments: Now, when you win a level, you will regain one heart. Previously, you would lose a heart when losing a level and gain nothing upon winning. The last 6 levels used to be at double speed, which was too challenging for some players. I've now reduced this to only the last 3 levels being at double speed. Mac version will be updated a few hours later, because I need to borrow a Mac to export the game. 2. "Backstage" Achievement Description: The description for the "Backstage" achievement was somewhat misleading, causing some players to think they needed to buy the OST to unlock it. This is not the case. You can unlock it during the Famous Violinist level. However, if you choose to purchase the OST, it would make me very happy, and all revenue from the OST will go to our composer. Thank you once again for your support and enjoy the game! Best regards, Loqi Creator of Thought Experiment Simulator