So many "It's my nth birthday, /wg/; post your nth wallpaper". Let's play a different game:

I'll start off with an RNG, but for everyone else use the post number of the last person to determine number of wallpaper you post. Use your own discretion for the number of decimal places with respect to the size of your folder (for example if the last post ends with 74 post your 4th, 74th, 174th, etc.)