Angry Duck Diver was created as part of the 2016 Train Jam (March 10th to March 12th).
It’s a bullet-heavy vertical scrolling shmup/STG which contains neither ducks nor diving. Instead you have to constantly balance your avarice and cowardice, building up bonuses and choosing the ideal moment to bank your points before you are destroyed.
The theme was maximum capacity and I interpreted that as a risk/reward mechanic where you increase your bonus gauge as you approach maximum capacity, but you also increase your hit box and risk destruction, losing all your unbanked points.
The Train Jam was an amazing experience, both as a jam and as a journey. The scenery is gorgeous and inspiring, and jammer disciplines seemed much more diverse / evenly spread than I’m used to at local jams (which tend to skew heavily towards programmers). I’m certainly planning on doing it again next year. However, one downside was the venue for the theme announcement/team formation before boarding the train; it was narrow and loud so it was hard to hear pitches or mingle with different folks pre-jam, and so I didn’t form or join a team before we got on the train.