Slide and Fall
Slide and Fall is a minimalist descent: rotating platforms stack downward forever, and your job is to slip through the gaps, dodge the occasional enemy, and keep falling. Difficulty is procedural — the longer you last, the meaner the rotation.
Controls are a single left-right slide, which is why it's easy to learn and genuinely hard to master: at speed, you're steering the fall two platforms ahead of where you are.
Tip: hug the gap's trailing edge — the platform rotates away from you there, widening your window instead of closing it. An ideal pick from the endless games shelf.