2121 is a PHONK implementation of the 21 gameui.background(0, 0, 0)var sum = 0var turn = 0const txt = ui.addText(sum, .2, .2, .6, .6)txt.props.textAlign = 'center'txt.props.textSize = 64function reset () { util.delay(2000, function () { sum = 0 txt.text(sum) })}function add (player, n) { const btn = ui.addButton( n, (.8 * player), (.33 * (n - 1)), .2, .33 ).onClick(() => { if (turn !== player) { ui.toast('it\'s not your turn') return } sum += n turn = +!player txt.text(sum) if (sum === 21) { ui.toast('player ' + (player + 1) + ' wins') reset() } else if (sum >= 21) { ui.toast('draw') reset() } }) btn.props.background = '#000000' btn.props.backgroundPressed = '#000000'}add(0, 1)add(0, 2)add(0, 3)add(1, 1)add(1, 2)add(1, 3)21 source code