God of Thunder was developed by Ron Davis of Adept Software (creators of DOS classics Jetpack & Squarez Deluxe - also Jetpack II in 2017) and published by Software Creations (publishers of Night Raid, Hexxagon I & II and Argo Checkers) in 1993. God of Thunder has since released as freeware on the Adept Software website.
Now God of Thunder is an interesting game as it blends action, puzzle and RPG elements together very nicely, using the overarching RPG-style world and characters to push the story progression, while the gameplay consists of various screens containing either an action or puzzle challenge which when combined provide a consistent and interesting world to explore. The art style that overlays that world is simple, charming and colourful, which helps clearly define the various items, monsters and characters that you encounter as you seek to track down Loki.
I picked up this game in a Titanium Seal blister pack which contained the shareware part of the 3-part game, which followed Thor the god of thunder as he travelled through Midgard to do battle with the serpent Jormungandr. Just the single shareware portion lasted for a fair while in length compared to some shareware of the time, meaning I spend a significant amount of time exploring the colourful world that laid before me, solving puzzles destroying monsters with Mjolnir - Thor's trusty hammer.
It was not until later that I would obtain and play through the full game, with the second and third parts of the game being even longer than the first but given that the shareware portion was fun, challenging and occasionally brain busting with it's puzzles. As a nice touch, each chapter after the shareware version upgrades Thor's sprite and hammer to either have silver or gold armor, representing your previous victories.
According to the Adept Software website, God of Thunder did not do particularly well as shareware which is a shame as the game is a prime example of a well designed and fun DOS game.