Abandoned staircase scene done in Blender.
Texture resources used:
http://texturelib.com/texture/?path=/Textures/plaster/new/plaster_new_0006
http://texturelib.com/texture/?path=/Textures/wood/old/wood_old_0048
http://texturelib.com/texture/?path=/Textures/metal/bare/metal_bare_0029
http://texturelib.com/texture/?path=/Textures/plastic/plastic_0032
http://texturelib.com/texture/?path=/Textures/rust/completely%20rusted/rust_completely_rusted_0049
https://www.textures.com/download/decalsdamageplaster0027/61600
https://siobhan68.deviantart.com/art/Persian-Rug-2-157537574
https://www.deviantart.com/struckdumb/art/Book-129099216
https://www.deviantart.com/nihil-xiii/art/Texture-Book-Paper-Side-342958137
https://www.deviantart.com/bashcorpo/art/Grungy-paper-texture-v-20-471308560
https://www.deviantart.com/bashcorpo/art/Grungy-paper-texture-v-5-22966998
https://www.vecteezy.com/free-vector/top-secret-stamp
http://www.texturemax.com/category/textures/decals/stained-decals/
http://cpetry.gith