This is an early prototype of Word Cave, a two player cooperative spelling game played on a pair of iOS devices.
One player takes the role of speller, who must spell words from the stalactites at the top of the screen to drop on the foes. The other player is the shooter, who runs around below Mario-style. It is the shooter's job to not be killed and to collect the points dropped from spelling words and killing foes. As the name would imply, the shooter also has the ability to shoot stalactites causing them to drop and offer up a new letter for the shooter to work with.
The view scene here is that of the shotter.