Sky Hop: a free pixel cat game
Tap the screen, click, or press Space / ↑ to hop. Fly the cat through the gaps between the towers. Each tower you pass is a point, and it gets a little faster as you go.
How it works
How the game works
Sky Hop is drawn on a tiny canvas, 180 by 300 pixels, and scaled up so every pixel stays sharp. The cat is the same one that walks along my home page street. Each tap, click or press of Space gives it an upward push, and gravity pulls it back down, so the trick is timing, not holding.
The physics
The game updates 120 times a second in fixed steps, so it plays the same on a 60 Hz phone and a 120 Hz screen. Each tower you pass is a point. With every point the towers move a little faster and the gap gets a little smaller, up to a limit, so it gets harder without becoming impossible. Every 10 points the sky moves on, from day through sunset to night, and then round again.
Saving and battery
Your best score is saved only in this browser. If you switch tabs the game pauses, and a paused or finished game that is off the screen stops drawing, so it does not drain your battery.