I experienced the original PopCap Plants vs Zombies game on my MacBook in 2009, coinciding with my first semester of PhD school. Possibly the worst or the best time to become addicted to a fun and lively game, depending.
I loved the game's wittiness, aliveness, hilarious sound and visual design, and its simple, straightforward gameplay. It offered enough variety and twists for novelty, but was never so hard that I couldn't figure out a way to beat every level. Plus, it sported the most darling, catchy, mood-setting, equally witty soundtrack; I just listen to a few bars and I am smiling for no good reason.
Crucially, it was also an indie project at Popcap. When EA bought Popcap, that lovely individuality was effectively squashed as the corporate hive-mind was devoted to "freemium" games where they could squeeze as many pennies as possible from their users.
On my iPad, I downloaded Plants vs Zombies 2. While the gameplay was familiar, and the wittiness still present, I was in the end disappointed by the experience and deleted it from my iPad.
The game is free but the non-stop ads to make in-app purchases for extra plants, gems, coins, etc. took the wind out of my sails (and out of their sales). I was also irked by obnoxious video ads for other games taking over the screen. I don't care about these stupid games -- turn the ads off!
The original game was not "pay to play"; everything I needed to win came with the game. Although some reviews say it is possible to win PvZ2 without the extra purchases, the player is forced to replay earlier levels to rack up more coins and gems so they can survive the tougher levels and unlock new worlds. This makes the experience more of a slog than a delight. While the reviewers praise the gameplay, they also lament the paywall "feature."
God, and the new "worlds": the old West, a pirate ship, ancient Egypt. That was as far as I got. I felt always a little lost as to where I was in this giant zombieverse. The clarity and simplicity of the original was gone.
Another reason I deleted the game was that it was so damn addicting! Because a round takes only about 3-4 minutes to play, I would tell myself, "Just one more. Shoot. OK, one more. Shoot. OK, just one last one."
I got stuck on a couple of difficult levels, began obsessing how to win them, and repeated that "just-one-more" gambit for up to an hour at a time. While I knew the game was not inflicting any weird psychological damage, I also knew that it was not my friend and was keeping me from better things.
Like writing. And reading. And just sitting in the dark and being quiet, which is way more restorative.