Which 3D engine to choose for the implementation of the anti-tank complex shooting simulator?

Question

3D

There is a task - it is necessary to write a simulator of firing from an anti-tank complex. Deadlines are two weeks. The fastest 3D engine is needed, the quality of the picture does not matter much - the main thing is only the basic effects of explosions, fire. Ease of learning and support for importing into Blender / 3D max is also very important. The programming language doesn't matter.