is it posible to make rain in blender 2.49b? or blender 2.5 alpha?
Yes. rain can be made using the particles in blender. Here is a good tutorial on how to make it. A rain effect can also be made for the game engine, however, instead of particles, you use alpha-mapped images that are spawned from empties (sorry if thats confusing, i dont know how to make it any easier to understand other than giving u a few links )
this one is from blenderguru.comhttp://www.blenderguru.com/bring-the-rain/
I use the particle system to generate rain. All I did was use a plane with a particle system, model a raindrop (on a different layer), select Render --> Object in the Particles Tab, and use the raindrop object as a DupliObject.
However, as fpsgod17 said, the particle system technique won’t work in the Game Engine.
Here’s a blend with one of my tests: rain_sim.blend (813 KB). Just make sure that layer 2 is in the camera viewport, press Alt+A, and watch the animation.
Hope this helps.