Crumb rendering system Crumb rendering system has been implemented. This rendering system replaces grass renderer used in previous engine. Unlike old system that was particle based, new system uses real meshes for crumb appearance. So, crumb can be grass, bush, stone, tree or any other model you wish. Distribution of crumbs is defined by set of parameters, such as gap size, random gap margin and max. rendering distance. You can also group different crumbs of a similar kind (e.g. group consisting of grass, flowers and bushes; or a group of different trees), each kind with its own distribution weight, to render whole group over the terrain. It is also possible to have more crumb groups over the one terrain, with masks that define their distribution. Those masks can be painted directly over the terrain in Serious Editor, using our paint tool. Overall, this is powerful, fast and user friendly tool to create rich vegetation over the big terrains, with good visual and performance control. Doom III cooperative mode Regarding the latest news about highly anticipated Doom 3 game, it's said that it will have cooperative multiplayer mode for 2 players. That is a great news, since it will be much more pleasant to wonder through Hell side by side with your buddy. Lets hope it will start a trend and that more and more developers will include this great mode into their games. It ain't nothing like a good book For a past weeks you read about great features that we implemented in our new engine, and you probably wonder how are we so smart. Well, we will discover you a secret, but don't tell anyone. It's all because our programmers read a book "GPU Gems - Programming Techniques, Tips, and Tricks for Real-Time Graphics" by Randima Fernando. We highly recommend this book, and it is not only because one of our programmers, Dean Sekulic, contributed one of its chapters.