Build Up!! vs Reflex Games

Build your structure as high as you can! Gather additional building nodes along the way and reach the checkpoints!

Swipe fast. Think faster. The rule changes before you're ready. Rule Sort is an endless reflex game where a rule decides where every falling object goes: warm vs. cool, round vs. angular, small vs. big, solid vs. hollow, and more. Swipe left or right to sort each object by the current rule. Get it right and keep your streak alive. Get it wrong and you lose a heart. WATCH FOR THE TWISTS - The rule card flips mid-run, and sometimes your controls flip with it - Storms double your points but come in fast bursts - Mines are never sorted: let them drop for bonus points THREE LEVELS AND A MEMORY MODE Play Easy, Medium and Hard, each with faster falls and trickier rules. Or try Legendary, a memory mode where you sort by what you remember seeing. Unlock new sorting rules as you play, complete missions, and protect your daily streak with freezes for the days you miss. DAILY CHALLENGE Everyone gets the same daily run. Compare your score on the global leaderboard and see where you rank against players around the world, right from Game Center. WEEKEND SPRINT A rotating weekly challenge adds fresh mutations to the core rules, keeping every run different. ONE MORE TRY Out of hearts? Watch a quick ad to revive and keep your run going, or go Premium to remove ads entirely and get unlimited revives. Rule Sort is quick to learn, hard to master, and endlessly replayable.