This is to do, and redo, the tutorial at https://developer.mozilla.org/en-US/docs/Games/Tutorials/2D_Breakout_game_pure_JavaScript or if you just search for it the “MDN 2D breakout tutorial.” The goals are to update the game (it uses archaic standards that are no longer supported), maybe add something, and maybe even remove something. The game and/or the tutorial are valid posts/submissions only if uploaded to itch in some way, so no external links!
This is really more of a bulletin board thing, not a Jam. Or maybe an “unofficial” one! If requested I will copy and attribute the tutorial here, too. Let’s have some fun.