The Tavern

To as follows

1. Initial monster set is fixed; 12 rats, 3 bats

2. Monsters never generate (except orbrun)

3. No shaft

Boring. Play sprints.

D:1 is unfair (no upstairs to stairdance) but the thing is, it doesn't matter.

While you're still in D:1 you have invested less than five minutes into your game, so if you get mauled by a gnoll in a tight corridor, you just restart. If you get shafted three floors, you may even want to restart right there, but you might take it as a challenge and have some fun trying to survive.

If you would do this you might just as well just remove the rats and bats and give the PC the exp from them straight away, put all the items on the level to the player's inventory and start the actual game on D:2.