OverLord is an amazing game,but their are a few minor glitchs. the minions can get stuck at some times, not very often though, and sometimes you, yourself on somethings like minecarts. Other than that their are not many bugs at all.
Now the gameplay is completly amazing. It has an amazing storyline that will keep you playing for hours srtaight. It's the feeling of sending your minions out to murder unicorns, mermaids, and everything inbetween.
The evil tower is amazing. Theirs is a forge, minion burrows, and private quarters. The part about the tower i liked most is that you candecorate it. Depending on your "first misstress" will change the decorations you can buy. So you can mix and match.
So from this review i hope you can see that this game is amazing. i realy enjoied this game, and i'm sure you will to. So have fun, and spread you evil across the whole world.