If you're on either iOS or Android, but have a friend on Windows Phone, you don't have many options when it comes to playing games with them.
But now, with the arrival of Battledots today, you have another game to add to the short list.
It's a competitive strategy game in which you fling dots at each other across five lanes in order to defeat your opponent.
There are 15 dots in total, each with a unique ability, and you choose six of them to take into battle with you. Then you attempt to attack and counterattack your opponent by launching them across the board.
You can play it with a friend on the same device, or you can make use of its cross-platform online multiplayer.
There are also over 100 levels to beat as well as an endless mode with a leaderboard attached. So plenty of opportunities to prove your dot-flinging skills, then.