  We model a dynamic public good contribution game, where players are
(naturally) formed into groups. The groups are exogenously placed in a
sequence, with limited information available to players about their groups'
position in the sequence. Contribution decisions are made by players
simultaneously and independently, and the groups' total contribution is made
sequentially. We try to capture both inter and intra-group behaviors and
analyze different situations where players observe partial history about total
contributions of their predecessor groups. Given this framework, we show that
even when players observe a history of defection (no contribution), a
cooperative outcome is achievable. This is particularly interesting in the
situation when players observe only their immediate predecessor groups'
contribution, where we observe that players play an important role in
motivating others to contribute.
