Not sure where to put this, or whether to post it at all.
I stumbled on a couple of cute discounted puzzle/programming games:
Human Resource Machine and
7 Billion Humans, both from Tomorrow Corporation.
I finished the first one and only looked at the intro of the 2nd. They're very funny and well polished, though without much pretention.
EDIT: The 2nd is about parallel programming, and has an even darker humour than the first
HRM is really like a simplified assembly language that you use to program typical algorithms (division, filter, sort, …). A human executes the instructions in a setting of big corporation's inbox / outbox emails (just a simple input / output of numbers and/or letters). You can solve the problem, and if you want, try the two typical challenges to get under a limit of lines or cycles.
It reminded me of some long-forgotten assembly language optimizations with code and loops that end up in a real spaghetti code
A lot of fun, and not too difficult.