Download Doom 6666
The classic Doom game managed to get such a high popularity that a lot of sequels have been created by the fans. All of them use the same gameplay features but the details are always different so you will not get bored by such games that you might play. Doom 6666 is such a game with three dimensional graphics and it is fully enjoyable.
There are no bugs into the game but the gameplay itself is a little bit difficult as you will have to work pretty hard in order to get past the water in the compound, because all of the ponds are electrified and you will not stand a chance if you fall down.