Arrow keys to move. Red elements like uranium will kill you. Black ones like hydrogen won't do anything. ALL LEVELS ARE POSSIBLE! I've completed all of them. With 110 deaths. If you don't understand what this is, you should learn. It's funner if you know what it is.
Credits: HUGE THANK YOU TO @Z_master he made the script in his build your own platformer project. ------------------------------------------------------------------------------------------------------- So for a while now I've been wanting to build a platformer but I wanted to come up with something that was original, creative, and my own. So one day I looked at the table of elements and I thought "Hmmm. That seems like a good idea for a platformer." This is also pretty eduacational too. Thanks for scrolling all the way down here!