good idea for a game however there are a few bugs i noticed, even if you have the key you cannot open the office door, doors will literally come off their hinges and move about the space if opened when an alien is on the other side, there is a room absolutely stuffed with aliens which when one manages to move the door they will all kill you extremely quickly. outside of the bugs and inability to move on a stage, i love the sounds they add a lot of immersion to the game and the art is incredible, it is very detailed and well thought out, great job!