I want to talk about the HTML5 (browser) version and it's limitations for a bit.
Explaining why you should download the game instead if you want the best experience.

• Files : First of all, files handling can be very problematic with HTML5. It does work on Clover's Space Beat, making it have a functioning save file system. But there might be some problems.
• Sounds : Second is how it handles music and sound effect. You might notice some pretty bad sound glitches, there's nothing I can do about it.
• Graphics : There might also be some visual glitches, especially for animated sprites.
• Mobile browser version : If you try to play the browser version of the game on your phone, it will just not work properly because I didn't make it to work this way. Please use the Android version for that.
• Screen size : I cannot find a satisfying way of changing the screen resolution, so it's fixed to the size you have on the browser.

For all of those reasons, I strongly recommend that you download the Windows or Android versions which are much more stable and the "canon" way of playing this game.