I've seen so many of these types of movies. Cube (also has 2 sequels) was one of the earlier good ones (where random people are stuck in various adjoining rooms with "puzzles to solve"). A more recent one that is better than Employer is Exam (2009) - rated 6.8 and with many great twists. Other similar movies involving people killing each other off in a "room" include: Devil 6.3 (2010) - people stuck in an elevator, The Killing Room 5.7(2009) - people in an scientific experiment, Unknown 6.5 (2006) - people stuck in a warehouse, Fermat's Room 6.6 (2007 - foreign language) - 4 mathematicians in a rm, The Method 7.3 (2005 - foreign language) - interview process Overall Cube (the first one) wins with 7.4 rating and oddly enough being the oldest (1997). Enjoy these movies if you like the genre.