Joxerjen, allow me to add on a bit to that interesting post by SerqSekhet. And incidentally, I think you're on to something worthwhile here. Yeah, there are lots
of games about ancient Egypt, but come on...you can never have too many!
Anyway, according to the myth, when Isis gave birth to the infant Horus, she fled to the far north end of the Two Lands to hide him among the reeds and rushes of the marshy Lower Egypt, what we call the Delta today. Though Horus is generally depicted as a complete falcon or as a falcon-headed man when he is meant to be shown as an adult, as a child he is depicted as a...well, a child, a little boy. You see him in statuettes and amulets and reliefs as a very young nude child, finger to the mouth in the typical Egyptian art-pose for children, with some form of royal crown atop his head (the style of crown varies). And in fact, when the ancient Egyptians referred to Horus as a child, they called him Hor-Pa-Khered (hr-p3-khrd),
which means "Horus-the-Child."
So for these early stages of Horus' life in your game, you might include such motifs as marshes and reeds, a small boy wearing a crown with his finger posed to his lips (in the nude or in a modest loincloth, whichever you prefer), a protective Isis always nearby, various acts of training to prepare the child for life, perhaps even a nasty Set lurking about in his attempts to locate this boy.