I admire the simplicity in this and I'm wondering what could be built upon it to expand the experience without taking that away. Maybe some cryptic clue, like a glyph in an alien language could tell you which direction to push in, so once you figure it out, the gameplay becomes faster? Maybe you have to do something else to make the arrow appear? Maybe more white squares appear and you have to join them in a row to push them all off the screen at the same time? Do you already have something planned?
Thanks for the feedback! Your suggestions were great and jump-started some ideas for adding more depth! The most common feedback I’m hearing is this gameplay loop is a good foundation but definitely has room for growth. I’ve got a few ideas I’m going to try out that will hopefully flesh the gameplay out a bit more!