Developer Fluid Entertainment announced Emerald Island, an environmentally aware children's MMO currently in open beta and scheduled for release in fall 2008. Though trying out the beta requires a downloadable application, Fluid intends to launch the game as a web-based application.

Set against an environmentally themed story, Emerald Island is designed to encourage self-expression, exploration, community participation, and global consciousness. Players will be able to take part in events and complete quests to help Tamino, the game's hero, save the island from a group of Pirat rodents.

Players can also try out a gardening simulation to plant and cultivate 150 different species of plants. Furthermore, Fluid has partnered with non-profit organization Trees for the Future to plant ten trees for every child that participates in the beta.

Based in Mill Valley, California and founded in 1998, Fluid Entertainment is an independent children's interactive entertainment developer led by founder and chief creative officer Scott Mathwes. The company secured $3.2 million in Series A funding led by Trinity Ventures in March 2008.