What you would do, if everything seems to be over and you are still alive? We are pretty sure you'd like to come home. The story takes place in Half-Life universe, after being a lab rat and death of mental ai system, you should make your way in the wake of last alive members of "Aperture Transport Systems", subdivision of "Aperture Science". They're barricaded in Institute Campus, which is located on volcanic island. However, after a while the portal storm has begun, which brought Combines, Headcrabs and Antlions...
You can download the game in the "files" section
Link to dowload Android port CWTH
Moddb.com
I remember having a lot of trouble playing this mod and some sections wouldn't work (probably the pipe update) now you the madman port this thing to android you just want to watch the world burn looool