I'm creating a game where the player earns money while playing, my question is, could it be considered illicit or misleading to use the dollar sign ($) after the current amount of money in-game. I'm releasing the app on the Play Store, so I was wondering if I could get trouble in for using the sign even while the in-game currency is not in any way bound to real-world money. I haven't added in-game purchases so it's completely detached. My main concern would be the legality in the countries where the dollar sign is used, for example, the US and Australia. Is it illegal or should I fear any type of legal repercussion?