Mr.Nussbaum.com, Math-Play.com and JustKidsGames.com offer games for children that involve cash registers or cash drawers. JustKidsGames.com provides the most realistic cash register during play. The player sees the top of the cash registers and cash drawer and needs to give exact change for 50 points.
Mr.Nussbaum.com offers a game where different characters bring items to pay for and the child gives change. This game allows the parent to determine hint availability and change due shown. At Math-Play.com, the child gets a cash drawer and needs to determine the amount of bills and change given to make correct change for the item before moving to the next item.