Advent of Code 2020
Perhaps a bit late to announce this event, but this month the Advent of Code is running.
Each day, a new puzzle is released which can be solved using any programming language.
For me, LINQPad is the ideal companion because of the versatility of the .NET Framework and the compact solutions.
So if you have any spare time left this month - join https://adventofcode.com/
For example, last year I ran this game in a DumpContainer.
(Game engine code was provided, assignment was to create an interpreter)