Easy-to-use simulations of human behavior
Nicky Case is a tough act to follow, but there are a lot of simulations available for a variety of different theories in social psychology and behavioural economics.  As such, I won't try to list them all, but provide a "list of lists" that should help you to find more.


Wikipedia maintains a list of games in game theory.  This does not link to any simulations, but it's easy enough to search Google for them.  For example, here are a couple of interactive online simulations of the hawk-dove game: Single population, 2 population, and an interactive version of the Blotto game can be found here.  Wikipedia also has a "list of lists".  There are also several interactive simulations that are capable of modelling multiple game theory games, including the prisoner's dilemma: GTE, Oyun, Axelrod.
NetLogo, from Northwestern University, lists a number of psychology and social science simulations in its models library (sorry no jump-to link, you'll have to scroll down to see the categories), including Rebellion "... an adaptation of Joshua Epstein's model of civil violence (2002)", the Piaget-Vygotsky Game "... to shed light on the ongoing debate between two theories of learning, constructivism and social constructivism", and Ethnocentrism based on a model by "Robert Axelrod and Ross A. Hammond".
AnyLogic Cloud offers a variety of simulations for its platform, including agent-based models such as reinforcement learning, epidemic model, and schelling segregation, and market models such as restaurant business.  Several other simulation platforms for social science and human behaviour are listed in Wikipedia's comparison of agent-based modelling software.
A list of interactive online  economics simulation games.
An old simulation on the evolution of social norms.


The above lists are all free; the catalogue would be much larger if you add paid services such as classroom education software.