What genre would you put “Dope Wars” in

The genre has a few popular names, including:

• Hack and slash
• Action RPG
• Dungeon crawl
• Diablo-like or Diablo-esque

And sometimes even the term "roguelike" is used - there is a vast difference between the roguelike genre and games like Diablo, but the latter are obviously influenced by the former.

The most common term I've encountered is "hack and slash". There are many, many games that belong to this genre, especially since the success of Diablo.

The excellent Moby Games site has a page about the genre, which briefly outlines what defines it as well as providing a list of all the games it considers to be "Diablo variants".

There is not a clear definition of MOBA out there, so let's define it.

MOBA is a genre definition for multi-player games where not only two parties struggle for resources or attack/defend, but each party/person is against all others in a confined space, therefore the term arena.

Battle arenas in real terms had a pre-defined resource collection: Multiple entry points for opponents, and spread out in the arena, weapons and shields.

Loosely defined, one can see it as a mixture of RTS/RPG and Free-for-all deathmatch, the emphasis is in some games on the former part (DoTA-type games) and in others on the latter (Monday Night Combat).