7 Wonders of the Ancient World is a puzzle game much like
Bejeweled or
Jewel Quest. In
7 Wonders, you need to swap the places of two adjacent stones in order to form rows and/or columns of three or more like colored tiles. As stones are destroyed, the pieces fall to the bottom of the screen. This part is slightly different than the other two games mentioned because these pieces are used to help build the various Wonders (i.e. The Pyramids, Garden of Babylon, etc.).
This background construction that goes on as you work your way through the level acts as a type of progress bar and by completing each of the Seven Wonders, you then unlock the next difficulty level where you have to do a little more effort in order to line up same-colored blocks.
Besides the Story Mode described above, 7 Wonders of the Ancient World, there are two other gameplay modes, Free Play and Rune Quest. Free Play lets you replay any of the Wonders that you have already unlocked, except this time under a time mode that forces you to work a bit faster than before.
Rune Quest is like Free Play in that you can play any of the levels you have already unlocked, but where it differs is the lack of a time limit and the need to clear only a certain type of stone. This slight change makes this mode a bit longer and tougher than any of the previous ones since you can't just work to clear just any stone.