Making your game general

ITT we discuss how to collaboratively design our games.

Elona has a lot of cool shit that many other RPGs don't have.

You can steal anything.

http://runescape.wikia.com/wiki/Thieving
http://www.uoguide.com/Stealing
http://ragnarok.wikia.com/wiki/Steal
https://gamefaqs.gamespot.com/pc/922154-neverwinter-nights-2/faqs/46019
Modern MMOs don't have player stealing from other players, because its an easily abused mechanic. Some MMOs have limited thief abilities targeted to monsters/NPCs.

>You can kill pretty much anyone, though there are penalties for doing so.
Killing NPCs in a MMO is bad design, but single-player RPGs allow it often(grimdark)

>You can be a street performer who plays an instrument for money.
That is within in-game rules, you can play as a (female) performer dancing in a MMO and have real players donate stuff/currency to you.

You can have houses.

Many MMOs have housing. Second Life is essentially the Housing Online MMO, that is built around land ownership/rent/building your own little world(you can build a mini-MMO inside Second Life).

>You can make money by opening a museum and attracting visitors with your cool items in it.
MMOs have trade shops, where you can open something like a stand with items sold by NPCs. Also, Second Life has museums and shops where real players pay money to buy virtual stuff(though as of now many migrated to selling through website interface that doesn't require owning land).

>You can set up shelters anywhere for when the weather is bad.
MMOs have an equivalent system of protection spells and town portals.

>You can get strange diseases. You can mutate.
Curses and transmogrify spells are quite rare in MMOs, but single-player 3D rpgs have plenty of that.

You can make enemies drunk by giving them alcohol.

Single-player RPGs probably have this, but its scripted.

You can detonate nukes.

Fallout? How this meshes with medieval fantasy?

>You can talk to NPCs. You can do quests. You can go to dungeons. You can have a follower.
Typical MMO stuff.

You can fuck hookers.

Erotic Roleplay in Roleplay servers and specific sims in Second Life are far more immersive and occur with real people.

You can mutate and gain extra body parts.

Transformation spells. You can transform in verious animals in MMOs.

You can worship a god.

Typical RPG stuff.

You can kill god.

End-bosses that have religious nature can be called gods.

You can modify weapons and armor.

Typical MMO stuff.

You can get married.

This is more common in asian MMOs.

You can genetically alter things.

Depends on things, this is possible to cast spells to improve weapons/armor/consumables.

You can give NPCs poisoned or rotten food.

Only in scripted single-player RPGs.

You can download and install add-ons to the game.

WoW alone has hundreds of addons.

You can use your own graphics.

Graphics mods for MMOs and RPGs are plenty(esp. Nude Mods)

You can cast tons of different kinds of spells.

Typicall MMO stuff.

You can steal your opponent's weapon.

Thats called open looting, and PVP open looting exist in some hardcore MMOs and RPGs.

You can see when other players die, even though it's not multiplayer.

Typical mmo stuff

You can visit other players' houses, even though you can't play with them.

You can visit your MMO friends house AND play with them.

You can ignore combat and do trade goods between different regions.

You can live as trader in MMOs if you exploit auction/trade system.

You can have kids.

The closest thing is that you have pets in MMOs, some of which are human-like.

You can have heirlooms for your descendants.

You can have mercenaries and pets equipped in MMOs.

You can play as your kid (kind of like NewGame+).

There are ascendance mechanics in some MMOs, where you restart at level 1 with some perks from previous gameplay.