Hi, I'm going to clear up the original feedback and everything mentioned in the replies here.
Most of the original versions of PvZ had "$" on the coin sprites instead of a sun (and "€" / "£" in some European translations), the mobile versions changed this to be a sun icon on the sprites, probably to avoid making multiple coin sprites for different currencies, and along the way creating a very fitting fictional currency.
I am not sure what ArztonZX-_- is talking about with the Tree of Wisdom, but I don't remember any official version of PvZ letting you scroll up to see the height of the Tree of Wisdom.
I think what ArztonZX-_- and hkgspbkftjs5 confused with "Giga allstar" is what is known as "Giga-Football Zombie" or "Dark Football Zombie", which is a black Football Zombie with way more health. It is largely popular thanks to mods adding it into the game, but was actually originally seen in the official Web Flash Demo of PvZ in the Endless modes (and in PvZ Social Edition too, a Chinese-exclusive PvZ game).
Not too sure about the Night Roof levels either, since the only one in the Adventure mode in the official game is 5-10 (Dr. Zomboss level), perhaps they are talking about adding Night Roof (also known as "Moon") levels for the Survival modes and similar.