So, BuilderZ has gone through some change of plans.
As now it will be free, there won’t be co-op, only single player option, also now as it features dynamic grass, there wont’ be webplayer version neither as this won’t work on it.
Also I’m planning to buy Unity3D Pro, for better effects and shadows etc.
Check: www.rottendevs.com
Here’s my Youtube for more videos about Unity developments:
http://www.youtube.com/watch?v=yF6xnZKSfSk&list=PLaVSsIQnR2M18517ME3elhWbniUBx_-uA&index=6
