One of the best Christian games, ever.
The game had pretty good graphics for its time, and it had some good puzzles as well. I actually played through the PC version of this game, so I am not entirely sure how well the NES controls worked. The puzzles were well-thought out, though certainly nothing like Myst, and it had a heavy emphasis on item-collecting and powering up. For each area, the hero had to defeat a boss and then collect one of the pieces of the Armor of God (such as the Belt of Truth or the Sword of the Spirit), using it to pass on to the next level. Plus, Fruit of the Spirit upgrades were scattered throughout the world. The fruits were "weapons," hurled at unsaved souls and demons. There were the straight-shooting pear, scatter-shot grape, and several other varieties; these could all be upgraded for more "bullets" per shot. It had a reasonable range of enemies, and often surprised me with its variety of gameplay. The player got to pilot a boat, throw Samson's jawbone as a boomerang, and blow up dynamite. For the Bible learning side, Bible trivia questions would bring one's health up if answered correctly.
The game had a few downsides. Sometimes (for the PC version, at least) there would be glitches in the save/load feature. It was also to easy to accidentally quit a game from the after-death menu instead of choosing a continue. *SPOILER* The ending also was underplayed. After the major battle with the head devil who has been holding the town in bondage, the hero is rewarded with a scroll that appears, congratulating the hero. This may be just me, but I personally like to see a longer, more satisfying conclusion. *SPOILER* A problem with the PC version was that a password had to be entered every time the game was loaded, when I lost the password sheet, I was not able to play.
All in all, though, this game was well executed and ranks as probably my favorite Christian game of all time; this is a sad opinion to hold, since it shows the state of Christian games today. Hopefully, they will improve considerably soon, God willing.