Godville - is a unique "game". You're a god of your own hero that wanders around world, and you read his reports(or rather, thoughts). You can do good or do bad to him, give him high commands, it all wastes your godpowers' bar, that resores rather slow overtime. But the "gameplay" is... waiting. You read his reports, drive him to hero or evilminded, watch him build temples of your name, care about his pet. but it's all in plain, random text.
The best part of it - you don't have to do anything. Consider it as 24/7 AFK game that plays itself to eternity. And it's online as well.
Antimatter Dimensions on the other hand is Realm Grinder's brother-in-law. Game is plain as well, but it's a escalating hellscape. If you played Cookie Clicker and thought "AH YES +1% PRODUCTIUON COOKE FOR 30M OF MY CURRENT CPS AMAZING" or got really far into the Rs in Realm Grinder - you'll feel just at home.