Systems of the Apocalypse3 books in series
Apocalypse: Generic System Publisher's Summary
Jeb Trapper tried to kill himself. The gun jammed.
Two months later, the vet is now participating in underground trials of ecstasy to treat his PTSD. Everything seems to be going great until:
>>>The System Has Been Installed<<<
Jeb is teleported into a tutorial, along with everyone else on Earth. Now, he has to choose the level of difficulty. There's just one problem: He's high as a kite, and nothing seems impossible.