Thanks for advice.
1. About how to play. The fact is, i want to add some animation and swap out some good asset to let my game have fluency experience. But i still learning about how to realise it, so i just put the key interaction which will run basic gameplay.
2. About the sanity immediately to zero while the acceptable answer was choice. It's seems like i miss this unexpect behaviour when i test my prototype. Thanks to let me know