Battery Flat update 1 - 2 Nov 24

Graphics have been improved with added particle effects.
Added funny SFX to make player character appear more lively.
Added a level with key and doors.
Menu now has separate ON / OFF toggle for music / SFX .

In the earlier html version, every time you start a fresh browser session, you start from level 1 which can be irritatingly boring.
The updated version will start from the level you left off. It uses a cookie to store your last level played.
This cookie expires 30 days from last play. Tested on Firefox and MS Edge browsers. Can be manually deleted in your browser settings.