The game autosaves every time you navigate to a node/finish viewing one.

On the PSX version Authorize User starts a new game, and Load Data loads an already saved game. In lainTSX Authorize User will start a new game OR load an existing one if it is present, only overriding the player name. I felt that this was more intuitive.

You can reset your save file from the options menu in the top right corner.

If it's your first time playing the game, loading it might take a while. Subsequent website visits will be much faster once the browser caches all the assets. Be aware that gameplay already starts at the "Authorize User/Load data" screen, it's not a loading screen.

Browsers require user permission to autoplay audio. If you're not hearing any sound effects, just click somewhere around the page.

We've also had an issue where the player left the game idle for 30~ mins, and the browser's autoplay permissions reset. Again, if this happens to you, just click around the page and it'll get fixed.

You can change the language of the subtitles, rebind the keys, and export/import the save file and more using the options menu by clicking the button at the top right corner.