Physics-based arcade puzzle game with Tetris pieces, grand pianos, rocks, and other crap that you have to stack into a tower. Very simple, very fun. Possibly inspired by Not Tetris, the physics-based GameBoy Tetris abomination of a game.
The first 10/50 trials were pretty easy. I can apply some of my Tetris skills, but Tricky Towers is a very different beast.
Got the score 24 in ENDLESS.
While No Man's Sky was downloading, Jeppe, Erik, and myself played a bit of fake Tetris.