Portal 1 BTS

Portal 1 does not have many themes , there is only normal test chambers and bts. Portal 2 on the other hand , has many themes. This article will talk about how to make bts in portal 1.

Noticable Elements

In many maps with this style there are catwalks , vactubes , wall pipes , deceptive skyboxes , and more .

Textures

The textures for this are very simple style , for metal walls ceiling add metal/metalwall_bts_006a foor metal floor add metal/metalfloor_bts_001a or metal/metalfloor_bts_001b. For concrete walls add concrete/concrete_bts_modular_wall001a , concrete/concrete_bts_modular_wall001b , concrete/concrete_bts_modular_wall001c , and concrete/concrete_bts_modular_wall001d. For a concrete ceiling add concrete/concrete_bts_ceiling002a and for the floor add concrete/concrete_bts_floor002a.

Note:you can spice up walls with cut walls with models/props_wasteland/interior_fence static models and behind them vactubes and orange lights/gradients.