A man wearing a blue shirt and box over his head wandered the floor at Kyoto's Miyako Messe exhibition hall. As passersby stopped to look, he handed them empty lotion pump bottles and invited them to try squirting them.

It was a quirky moment, and just the tip of the iceberg at last weekend's BitSummit, one of the biggest independent-games events in Japan.

The bottles turned out to be controllers for "ShCoCoooCoCo" by Flash Games Japan, which was running on a screen embedded in the man's head box and showed players to be flying bottles of lotion, squirting at enemies.