Featured at the 48-hour Global Game Jam, Soulfill was built by South Philadelphia based game developer Jason Marziani, (under his moniker, Little Wins). Created with city travel in mind, Marziani set out to encourage interaction between strangers on public transport.

Many commuters rely on smartphone games to avoid interacting with fellow passengers, but Soulfill actively rewards players for completing social challenges like holding eye contact with a stranger. Committed to minimalism, Soulfill avoids images and comes in at less than a megabyte.

As Marziani is also a writer, it comes as no surprise that Soulfill relies heavily on narration. With a voiceover interface and simple touch gestures, players can focus on the mission at hand, as they're encouraged to look at strangers and record each experience. Soulfill is highly experimental, daring and addictive and questions what a 'mobile game' can be. Testing your interaction skills within a social setting, it makes use of technology to communicate in the old-fashioned way.