Diablo + Hellfire
In a time of fantasy and mythsm when demons rule the lands, and no town is ready to confront the evil, you choose your character and head to the town of Tristram. It appears that the local church in town lost all of its hollyness, and waves of levels beneath that church are filled with dark army. You volunteer to remove that evil, and seek the Diablo himself. Raging hordes of skeletons awaits you, bunch of crawling creatures surrounds you, and flames of Diablo salutes you, as you make your way to the bottom. Excellent music will just make the atmosphere better.
As we approach the end of Diablo, the mission disc called Hellfire was released, and you must have Diablo as well to play it. The Hellfire gives you another extra character, newer weapons, and new levels, that still keeps the same town for starting point, but with some more terrain revealed.
The game shows you all the way your mana (in blue bowl) and health (in red bowl), and the bottom inventory to use with numerical keys for faster concentration and easier restoring health and/or mana while playing or especially efficient if you're in a middle of a fight scene. Beside that, you move your player with left mouse click, and if you click it or enemy, the player will automatically switch to attack mode.
As you go through the dungeons below the church, you'll see that after each fourth or fifth level, you get an extra path to go back to city of Tristram, and the other way is to use town-teleports which works only once in both ways, and then they close when you used them in both directions.
At some points, there will be some team leader that are harder to kill, so you'll have to wait for better weapon to use it for fencing, and at some places you'll even find someone to talk to. But most of all, you'll find some interesting book lying inside this evil mouth.
The game allows you to save only once, so beware of making false steps, or saving when there's no way out. There are some things that you cannot finish 'til you talk to town folks and in exactly predefined moment, so sometimes you'll have to go back to find some information, and then back into the dungeons to use it.
For detailed info of each, use these links...