Talk:8-bit 80s/@comment-8635221-20150703093409/@comment-25981006-20150703101523

I wouldn't worry about keeping it consistent with the 5 plant rule (technically 5 plants and 2 premiums) because there's already a large amount of inconsistency with new zombies. Dark Ages has 5, Big Wave Beach has 4, Frostbite Caves has 6 and Lost City has 7. Not sure why Popcap acts the way it does with the plants but I'd say it's a gameplay issue, not a technical one. In other words, they don't want to run out of plant ideas (this might suggest the game could be continued indefinitely, especially considering Lost City was the most played update).