The best alternatives to End of the line are X-Files: Deep State, Whodunnit, and Whodunnit App. If these 3 options don't work for you, we've listed a few more alternatives below.
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The X-Files: Deep State is a mystery investigation game set in the X-Files universe. Players assume the role of a FBI Special Agent, investigating mysterious crime scenes that defy explanation. They must uncover hidden clues, collect evidence, solve puzzles, interrogate witnesses and suspects to solve the case.