This is a 2 player game. Hider tries to blend in with the NPC's, and not get caught. Hunter tries to figure out who the Hider is and select them. WASD to move if you are the Hider. Arrow Keys to move if you are the Hunter. Space Bar to Select the nearest Hider/NPC. Press M to place a landmine. If the Hider steps on it, it will turn red.
I made this alone, and I got the idea from a Roblox game I played one time.