If you like shoot ‘em up games,
Project Starship is quite good for its price even when not on sale. It is an easy completion but is NOT an easy game unless you play on the lowest difficulty setting. It is best played with an arcade stick.
The sequel was just released a couple of weeks ago. Although it is not listed in the TA sales article, it is also on sale for 20% off.
Project Starship X is much more polished & better than the first game. As you might guess from the name of your player character, Swagthulhu—a spacefaring Octopus-like entity—this is a Lovecraft parody & loads of fun. It is also an easy completion but a challenging game.