01 — The idea
Snowball League explored what would happen if informal snowball fighting became a purpose-designed recreational game.

02 — The scoring vest
The grate breaks up incoming snow and helps prevent players from directly packing snow into the collection pocket.
The pocket collects snow passing through the target.
The stopper flap helps prevent collected snow from exiting when a player bends or moves.
01
Snowball
02
Grate
03
Snow breaks apart
04
Collection pocket
05
Score
Diagram — snow grate, pocket, stopper flap
X/Y and Y/Z views of the target opening, collection pocket and flap.
CAD study — wearable structure


03 — Testing the game
Physical prototypes were tested through actual play in different environments to observe how the game and scoring equipment worked in use.

04 — Patents
Development of the scoring system resulted in patent filings and grants in multiple jurisdictions.

US 10,188,920 B2
United States · Granted Jan 29, 2019