Okay, an idea I'd like to throw out here - who remembers the game Prince of Persia?
To refresh your memory: Prince of Persia was made in 1989 by Broderbund (the people who brought us Karateka and the Carmen Sandiego games) for the Apple II. An evil vizier in ancient Persia has seized power and is forcing the princess to marry him within one hour. You, the hero, is the true love of the princess but you have been locked in the dungeon. You had 60 minutes to make your way up through the tower to rescue the princess and stop the vizier.
While there was action involving swordfights with guards, you also had to collect potions for health and get past traps like pits, spikes, and guillotines.
This game was ported to A TON of systems, both computer and console, like the Amiga, Amstrad, Sega Master System, NES, etc.
Could someone try to develop this title for the Atari 7800?