Type Quest: Subtype Chronicles

In the digital world of CodeLand, language constructs and data types come alive, intertwining in a complex web of programming challenges. You are a fledgling programmer on a quest to master the art of subtyping. Journey through various realms—Null Valley, Alias Mountains, and the Mythical Land of Memory Layouts—where you face puzzles revolving around type inference, nullable types, and permissions. Along the way, you'll encounter quirky characters who represent different programming paradigms, all while uncovering the secrets of sophisticated programming languages. Will you rise to become the ultimate Type Wizard or will you crash and burn in a sea of syntax errors?