I decided to throw together Conway's Game of Life in Lua for a TikTok for no reason.

game_of_life.lua

WIDTH=100
HEIGHT=50
PERCENT_START=66
CELL='0'
LIFECYCLES=25
TIME_DELAY='.246'

gameboard = {}

for i=0,HEIGHT
do
    gameboard[i] = {}
    for j=0,WIDTH
    do
        gameboard[i][j] = false
    end
end

percent_total = math.floor((WIDTH * HEIGHT) * (PERCENT_START / 100))
percent_counter = 0
math.randomseed(os.time())

while (percent_counter <= percent_total)
do
    local x = math.random(0, HEIGHT)
    local y = math.random(0, WIDTH)
    if (gameboard[x][y] == false)
    then
        gameboard[x][y] = true
        percent_counter = percent_counter + 1
    end
end

function copy2d(arr0, arr1)
    for i=0,#arr0
    do
        arr1[i] = {}
        for j=0,#arr0[i]
        do
            arr1[i][j] = arr0[i][j]
        end
    end
end

function processLife(gb0)
    gb = {}
    copy2d(gb0, gb)
    for i=0,#gb
    do
        for j=0,#gb[i]
        do
            local neighbors = 0
            if ((i > 0) and (gb[i-1][j] ~= false))
            then
                neighbors = neighbors + 1
            end
            if ((j > 0) and (gb[i][j-1] ~= false))
            then
                neighbors = neighbors + 1
            end
            if ((i < #gb) and (gb[i+1][j] ~= false))
            then
                neighbors = neighbors + 1
            end
            if ((j < #gb[0]) and (gb[i][j+1] ~= false))
            then
                neighbors = neighbors + 1
            end
            -- kill or birth
            if (neighbors < 2)
            then
                gb0[i][j] = false
            elseif (neighbors == 3)
            then
                gb0[i][j] = true
            elseif (neighbors > 3)
            then
                gb0[i][j] = false
            end
        end
    end
end

function printBoard(gb)
    io.write("\027[H\027[2J")
    for i=0,#gb
    do
        for j=0,#gb[i]
        do
            if (gb[i][j] == false)
            then
                io.write(" ")
            else
                io.write(CELL)
            end
        end
        io.write('\n')
    end
end

printBoard(gameboard)

for c=0,LIFECYCLES
do
    processLife(gameboard)
    printBoard(gameboard)
    os.execute('sleep ' .. TIME_DELAY)
end