The videogame compass

Mainstream
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Casual---------|-------------Hardcore
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Obscure

Alright, does your autismal text RPG has:
1.iron golem(d2) can be summoned from any metal item. Does Nethack has anything similar?
http://diablo.wikia.com/wiki/Iron_Golem

2.Do any of Nethack spells have synergy to other spells?
http://diablo.wikia.com/wiki/Synergy

3.Gambling NPC?
http://diablo.wikia.com/wiki/Gamble

4.Auras(skill-based and Monsters)?
http://diablo.wikia.com/wiki/Aura

5.Item sockets where you can put gems,jewels and runes?
http://diablo.wikia.com/wiki/Socket
e.g.putting a skull(a gem class item) into a specific item class gives that item a bonus.
http://diablo.wikia.com/wiki/Skull

5. Runewords: specific rune sequence inserted into socketed item, granting a bonus of runeword. Cornerstone of high-level gameplay.
http://diablo.wikia.com/wiki/Rune_Words

6.Crafted items:
http://diablo.wikia.com/wiki/Crafted_Items

7.Item recipes aka "Cubing" items:
http://diablo.wikia.com/wiki/Horadric_Cube
In D2 mods this mechanic is more extensively used because recipes are easy to add.

8.Set items:
http://diablo.wikia.com/wiki/Set_Items

9.Charms(item that has inventory effect):
http://diablo.wikia.com/wiki/Charms

10. Ethereal items(cannot be repaired)
http://diablo.wikia.com/wiki/Ethereal_Items

11.Class-specific items:
http://diablo.wikia.com/wiki/Class-specific_Items

12.Throwables(weapons that consume quantity)
http://diablo.wikia.com/wiki/Throwing_Weapons

13. Enchant(skill adds fire damage to item, that could be given to others)
http://diablo.wikia.com/wiki/Enchant

14.Telekinesis(skill to grab/touch items/object/monsters).
http://diablo.wikia.com/wiki/Telekinesis_(Diablo_I)
http://diablo.wikia.com/wiki/Telekinesis_(Diablo_II)

15.Rabies(transmissible curse-like attack)
http://diablo.wikia.com/wiki/Rabies

16.Thorns and Reflect:
http://diablo.wikia.com/wiki/Reflect
http://diablo.wikia.com/wiki/Thorns