So how do you get new cards? Can you only play against bots for stuff like cards or gems or do you eventually have to hit PVP?
PvP doesn't grant you cards (or not many, I'm not sure 100% sure about that). Most of the game you play against NPC duelists. There are 2 types. Ordinary duelists and Legendary Duelists which are the characters from the original series.
The PvE portion is divided in stages. Each stage has a different number of Objectives that need to be fullfilled in order to go to the next stage. They can be from doing special summons, to using spell or trap cards, to win a certain amount of duels. On top of those there are weekly and permanent locks.
Generally, you play as one character. You can unlock them as you go through the stages. You fight them, and the game gives you a new set of quests you must complete to unlock them. Each character can level up, and leveling up gives you rewards (skills, cards, gems...)
The game doesn't have an stamina bar per se, but there is a maximum amount of 5 random duelists that can be in the game world at once. Once you defeat them, it takes 30 minutes for them to respawn. On top of them, there is a special character called the Vagabond, and Legendary Duelists can appear at random. I'm at stage 11, I think, and I have to say I've never run out of things to do.
You can get new cards in 4 ways:
- They can drop from characters, and especially from Legendary Duelists.
- You can exchange Coins and different collectibles for some cards at the card trader.
- You can buy card packs at the store.
I think that's all.
Fake edit: For PvP, there is casual and ranked. You can challenge people from your friend list too.