The greatness of TinyAngband

[Ex]

I recently started playing TinyAngband, and have absolutely become addicted. I love the idea of an Angband variant that is much faster and shorter than other versions of Angband. TinyAngband is not exactly a coffeebreak roguelike, because it requires at least a few hours to beat. But, it only contains 27 small dungeon levels and your character progresses much, much faster. It's really fun and quite addictive. Though, it makes me wonder about what an Angband variant would be like that you could beat inside of an hour. Maybe only 10 dungeon levels? Anyway, TinyAngband is quite addicting and I highly recommend more people try it out!

http://xangband.sourceforge.jp/tiny/eng.html

[getter77]

I really do need to get around to trying this, Angband proper, and so forth...

[corremn]

Though, it makes me wonder about what an Angband variant would be like that you could beat inside of an hour. Maybe only 10 dungeon levels?

QuickBand is your answer then, IIRC has 12 levels.  Based on NPPAngand.
http://angband.oook.cz/quickband/