Solar System Sim vs HoldHop

Zoom from a planet's surface out to distant galaxies, then reshape the whole system with your own hands. Solar System Sim is a real-time gravity sandbox built on Newton's laws and real astronomical data. Every body you add, move or destroy recalculates the orbits of everything else, live. • Smash worlds together: impact craters carve into the surface, firestorms sweep the globe, and glowing debris rains back down. • Build your own universe: add planets, moons, asteroids and comets with their own size, mass and looks, or customise the ones already there. • Land anywhere: drop to a first-person view on any planet's surface and experience its environment. • Sculpt rings: add particle rings and watch gravity shape them in real time. • Witness real eclipses: solar and lunar, with real-world astronomical precision. • Follow comets: watch them streak past and interact with the bodies they meet. • Leave the Solar System: travel to remarkable nearby stars and find them within the Milky Way. • Feel the scale: see the true vastness of space, from a pebble-sized moon to the nearest galaxies. Whether you're here to learn how gravity really works or just to break planets with it, explore at your own pace. Start your cosmic adventure with Solar System Sim.

Hold to hop! Slide your thumb to steer. Hold to hop, release to land. The slabs never stop coming, and standing still is never safe — the one under your feet is already sliding away. ONE THUMB, NO BUTTONS There is nothing to learn. Move your finger, hold, let go. EVERY SLAB COUNTS You score for every slab you get past, whether you landed on it or sailed clean over it. Play it safe or play it fast — the tower does not care how you got up there. SPECIALS THAT CHANGE THE RUN Ice slabs freeze the world for a few seconds while everything else rushes by, and you score for all of it. Portals warp you up the tower. Crumbling slabs give way under you, ghost slabs are not really there, and launch slabs fling you somewhere you were not planning to go. WHO'S ACTUALLY BEST Game Center leaderboards plus a global board of your own, so your best run has someone to beat. Free to play, with an ad between runs now and then — one purchase removes those for good. Watching an ad to revive a run or to unlock an item is always your own choice.