Easily one of my favorite small-purchase games I've bought. The gameplay is very simple... at the beginning, that may seem like a fault, but you'll find out as you progress through the games that the small spattering of available traps can be rearranged into a good number of scary setups.
By and large, the level setup changes with every game. You'll find different tools as well, making it somewhat rougelike. The game rewards (and sometimes requires) gambles and is also packed with secrets and unlockables. There is some lore to discover underneath the campy setup...
Basically, a great game for stealth enthusiasts who want a tighter experience. You won't be overwhelmed with the variety of tools you have at your disposal: there are no levels, and no equipment, basically just items. However, the action can be fast paced. You'll find you'll spend some time thinking up strategies and learning to master everything available to survive.
Also a great game for roguelike fans. I found myself running headlong back into the setup menu after every (permanent!) death, eager to see what the next run had for me. With the ability to save mid-campaign, there's no better time to get it for gamers who like short sessions.
Recommended for people who like roguelikes, stealth games, dark humor, games that can run on somewhat lower-end machines, pushing themselves in video games, controls that are intuitive, and short gaming sections.
I don't necessarily recommend the game for people who feel they need very long games, aren't interested in replaying games (i.e. don't like roguelikes), are looking for a "mech" game (the scariest robot you're going to find is a spinning floating skull, but that's plenty; I should also mention that the designs lean more towards charming and quirky than menacing), or do not like the taste of office furniture.