It gets annoying when you have done 10 steps and made sure that nothing absolutely nothing, can ruin what you did... yay a bug. Why is that character walking in air suddenly? How come the movable objects levitate and other nice quirks that we more commonly refer to as glitches or bugs. And when one of them ruined your 10 minute spent planning, it's not fun. 2/10 for a fun game, although so buggy.