Tokyo Game Show's Experimental Gameplay Sessions equivalent Sense of Wonder Night (SOWN) celebrated its fifth year Friday evening. Here are two of its demonstrations for a dumpster diving minigame and an interesting use of iPhones contacting each other.

First up is trash digging iOS game Grandmaster by Artur Mine and Dmitry Verbitsky (of Beast Mode), joined by Marina Magaz. In a series of mini games, players dig through trash to find food and fend off their territory from police and other bums.

The developers take to the stage to describe how Russian homelessness isn't restricted to mere alcoholics; it spans the whole culture. Bums are the "samurai of the dump," so in Grandmaster, players naturally perfect the art of dumpster diving. Foregoing questions in the end, the developers burst into song (at the 11:00 mark). While the microphone picks up the mad keyboard skills, the vocals didn't pick up so well.

Second is I-team's Chumam, a game that requires two iPhones side-by-side to play. Players must connect randomly generated routes between the phones and pinch together the two halves of a flower to help the characters cross. Players have three seconds to line up both phones and pinch before the game ends.

Players score when either character walks through bonus point areas and when they rendezvous (cross paths). The gameplay starts at 4:50. The phones seem to act like Sifteo Cubes

Be sure to check out yesterday's presentations or the entire SOWN 2012 show.