1.Is it possible to make a split scren in Game Blender?(for 2 players)?
Yes, but it’s really difficult, and could make your game run pretty slow. I think Pooba is working on a demo.
2.Is it possible to make reflections in gameBlender?
with Publisher you can(I think) because you can use materials, but with Creator, I don’t think. But you can fake the reflections.
3.How can i make something like blood on the ground or wheels mark on the ground, like when im braking an car to add an wheels mark on the ground?
Add an empty, and when you press the Brake button, give it an add object actuator and make it add blood, or wheel marks.
4.How can i make an object dissappear on 1 point and appear at another point?
one way would be to make an animation.
for example on frame 1 make it at one place, then move it to the other place and make it frame 2.
Thanks all for all answers!!!