PvZ 2 was the time travel game, and yeah, I hit a road block on that one, but I think that the level I’m stuck on is an RNG level, not a premium plant level. It has a conveyor that delivers the plants it wants you to use, but the conveyor is slow and completely random as to which available plant it wants to give you. I just picked up PvZ 1 and haven’t really played it yet, so I don’t know how bad it gets.

PvZ Heroes is a trading card-style game and it has two types of currency which are fairly easy to access. The first currency gets you card packs and is available by doing daily missions or character based missions. The second currency is available by destroying cards you don’t want and is used to craft other cards. Every character also has two missions that provide enough of the second currency to craft a card useful for that character, and when you craft that specific card for that mission, you get some of the first currency.

Mortal Kombat mobile has two currencies and the only real use for the premium currency is to get a *chance* of obtaining a card that is not available in the challenge modes or the gold characters from the store. But it’s available through random drops, login rewards, daily quests, challenge mode, and PvP modes. Once you get a couple gold characters to level 20-ish, it becomes really plentiful.

I haven’t played the other games you’ve mentioned, though, so I have no bearing on any of that.