Some say that a god cannot exist. Those who say that have not met our Lord and Saviour Lutefisk. The Lutefisk is a kind giver, and also a taker, for one cannot recieve what they are not willing to give away. Thus has been taught to me by the Lutefisk. However, a new Cult is not the only thing that Dungeons of Dredmor offers.
As a roguelike RPG, gameplay is simple: run around, grab loot, kill monsters, and don't die (and not just because Lutefisk does not promise an afterlife). However, there are many fun and exciting features. An advanced set of skill selection, in the form of multiple skill trees with linear paths, keeps combat unique and different. For example, I have had builds where I run around and just kick monsters to death (yes I mean kick, as in with a boot) while dual-wielding shields and builds where I teleport in, drop mines, push monsters onto said mines, and teleport out of explosion-related danger. There are several different interactions in the game that either reward or punish you. For example, Krong, the God of Anvils, leaves blessed anvils randomly on floors in the dungeon that you can enchant your gear with. It is not until you place your gear on the anvil, the point of no return, when you find out if Krong blesses or curses you. And of course, interactions involves our dear Lutefisk. Tithing Lutefisk at a Lutefisk Shrine, a food item that offers barely any health regen, may appease the Lutefisk God, and he may give you an enchanted item. DoD also offers a completely fair difficulty curve: each floor means significantly harder enemies. Therefore, as logic dictates, you should complete the entire floor you're on for as much experience and items as possible. The only exception to this rule is random minibosses and of course, Dredmor. Minibosses are literally there to make sure you're paying attention to the game. If you're punching everything, and notice this one monster is doing half your health in one hit, you should probably use a different strategy. Dredmor is a completely overpowered piece of... bologna... but I mean, to me this makes sense. It's HIS dungeon, HIS realm of power, and you're trying to stop him. If he was weak, why would a HERO (and quite the hero you are!) need to stop him?
Another good part about this game is that it's very accessible. There are three difficulty levels, permadeath is optional (so you can save your dearest characters), there is an option for smaller floors with the same experience gain, and with DLC, there is an option for 5 more floors of grinding before the boss. Speaking of DLC quickly, two DLC packs are super cheap (2.99 USD each and actually the Deluxe edition has the game and those two DLC for just 6.99 USD), and the third DLC pack is free. Cheap and easy to get into means that casual players can enjoy as well, while advanced difficulties and more options means that the hardcore Roguelike fan can cater to their style as well.
Another important thing about DoD in my opinion is the community. This is one of the most friendly, most helpful, best communities I have ever experienced on any game ever. Most questions get answered in minutes, and the number of guides for new players is seemingly limitless. These same helpful and friendly people also make amazing mods that add even more playability to a game I haven't been bored for even a second in.
TL;DR: All in all, DoD is an accessible, fun, pun-packed, Cult-creating, deceptively simple Roguelike RPG with a good community and workshop integration. I would highly recommend this game even off of a sale, and when on sale I will attest that it's literally a "can't miss". If anybody has any questions, ask in the comments section, I will do my very best to answer them in a timely manner. Similarly, I will try to continue to edit this guide at appropriate times.
TL;DR;TL;DR: Very fun, creative game; amazing community; astounding Workshop content; optional Cult participation. Worth every penny.