Part of Project Groworld
The groworld games prototypes are available to download here:
Screenshots of Tale of Tales's prototypes are here: http://www.flickr.com/photos/entropy8/sets/72157622694727012/
See more work in progress
Wilderness is a flash game currently under development exploring multiplayer online garden ideas and permaculture. The current version is running here.
Plant eyes is a 3D game exploring what it would be like to be a plant and look out of it's 'eyes'
Hex roots is a 2D root growing mechanic which works around hexagons (this is the fluxus version, this is also a version written for Unity)
Hayfever was a groworld multiplayer prototype, testing the use of jabber messaging to communicate game events, and put the game in an interesting environment.
Treetris was an attempt to subvert a popular game mechanic in a vegetal direction, the idea being that your plant is absorbing nutrients from the soil and has to fit them together in the correct manner in order to grow.
Cellular tried to take a microscopic angle where plants are comprised of multiple cells which need to be connected together correctly by the player in order to build a plant.
See also Game prototyping