Definition of a crpg - nothing easier than that:
A crpg is a computer game in which a player
1) can control 1 or more characters
2) gets experience by questing (exploring and combat)
3) by getting more experience you can level up your characters (skills, talents,…)
4) you can interact with the world, NPCs, factions
5) you can equip your characters with items you find, loot, shop for
6) a story is told - your actions and choices have consequences
A crpg is a computer game in which a player
1) can control 1 or more characters
2) gets experience by questing (exploring and combat)
3) by getting more experience you can level up your characters (skills, talents,…)
4) you can interact with the world, NPCs, factions
5) you can equip your characters with items you find, loot, shop for
6) a story is told - your actions and choices have consequences