Sorting Nuts and Bolts by Color: Home Repair

So this game is basically color sorting but with a home renovation theme slapped on top. You start with a bunch of bolts sticking up from a workbench, each one holding a stack of mixed-up nuts. The nuts come in different colors -- red, blue, green, yellow, purple, and later some secret ones under question marks that flip to random colors when you tap them. Your job is to move nuts between bolts until each bolt holds only one color. When you get a full stack of matching colors on a bolt, it locks in with a satisfying click and frees up space. The core loop is simple: tap a bolt to pick up the top nut, then tap another bolt to drop it there. You can only move the top nut of a stack, and you can only place a nut on another nut of the same color or onto an empty bolt. This creates a slow puzzle that demands some planning -- you can't just blindly shuffle things around because you'll paint yourself into a corner. There are 15,000 levels, which sounds insane, but early on they're really gentle. Levels like "Garden Gate" or "Tool Shed" give you just four bolts and maybe eight nuts total. Then around level 200, stuff like "Attic Clutter" starts throwing in six bolts and nuts with stripes or patterns that act as wildcards. The difficulty sneaks up on you. By the time you hit "Basement Flood," you're juggling eight bolts with mixed colors and limited empty space, and every wrong move costs you because there's no time limit but also no infinite undo. You get three bonuses: an extra bolt (which you can place anywhere temporarily), an undo button (works for the last move only), and a restart. The extra bolt is a lifesaver when you've got two nuts of the same color buried under different piles. The satisfying moment comes when you chain moves -- like pulling a blue nut, then placing it, then clearing a red stack that was blocking another blue -- and the whole board unravels in three smooth taps. The home building part is just a side thing where completing levels earns coins to buy furniture for a little house scene. It's cute but not the point. The real hook is the texture of moving those nuts -- they rattle like real metal washers when you tap, and the haptic feedback on a phone makes each placement feel weighty. Later levels introduce nuts with question marks that hide their color until you move them, and bolts that can only hold four nuts instead of five. One annoying thing is that you can't see the color of a nut underneath a question mark one unless you move the top nut first, so there's a lot of trial and error. The game never explains the secret color mechanic well -- sometimes the question mark nuts turn into a color you already have on the board, sometimes they're a new one. It keeps you guessing. There's no timer anywhere, which is a relief because some late-game levels take twenty minutes of staring and replanning. The grind is real but the click-clack sound of locking a full bolt is worth the frustration.