In the past few months, Snap has been lightly dipping its toe into the waters of gaming. Later this year, it’s going to take the plunge.

The company is preparing to launch a platform this fall that will let outside developers create games to be played through the Snapchat app, according to two people familiar with the matter. It already has lined up at least one gaming publisher to make a game for the new platform, according to a person familiar with the matter.