Thank you for playing the game! The rain effect is just done using a shader. I took a random black&white rain image off google and am sampling from it in the shader, and in the areas the image is white i'm applying a distortion effect. This makes the rain itself, and I then just offset the sampling by some function of time so the rain moves. I already know about and have fixed the focusing issue but I can't update the jam page during the voting period unfortunately. Thanks for the feedback, and I'm glad you enjoyed it!