Binar.io vs RobozzleReboot

Binar.io is an assembly language puzzle game. You are given a machine, a specification, and a blank page. The BN-8 is an 8-bit processor with two registers, a loop counter, two flags, and twenty-seven instructions. It has no multiplier, no divider, and no compare instruction. Everything it can do, you build out of what it has. HOW IT WORKS Each level states a function, not a number. "Return the input with its two nibbles exchanged." "Return 1 when an odd number of the input's bits are set." A byte arrives in register A; whatever is in A when your listing ends is your answer. Your program is checked against cases you can see and cases you cannot. So there is nothing to write down and nothing to look up. The program has to be right for inputs you were never shown. THREE KINDS OF PUZZLE BUILD gives you a blank page and a contract. REPAIR gives you a listing that is already wrong, and a fault report. The first level in the game is one of these, and the program it hands you passes its first test case on purpose. IDENTIFY gives you nothing but the cases. Working out what the part is supposed to do is the puzzle. THREE SCORES, NOT ONE Every solution is measured on instructions, cycles, and silicon cost. On the levels that matter these do not agree: the smallest program and the cheapest program are different programs, and you cannot have both. A working program is always worth a star. Optimising is the reason to come back to a level, never the price of leaving it. WHAT IS IN IT 48 specifications across four worlds, from a single shift to bit reversal, packed field extraction, the doubling ladder, and a fourth world of memory, stacks and subroutines. A warm-up mode with 72 generated levels, each with a proven shortest solution. A one-page instruction reference you can open at any time. Dry and technical on purpose. No story, no energy timers, no ads, no subscription. World 1 is free, with all twelve specifications. The existing Full Campaign Unlock is an optional one-time purchase for the rest of the campaign. The App Store shows the price. For anyone who likes TIS-100, Shenzhen I/O, or finding out that the thing they built by hand was a single opcode all along.

Robozzle Reboot brings back the classic robot-programming puzzle game to iOS — write tiny programs to guide a robot around a grid, collect every star, and reach the end. No syntax to memorize: every puzzle is solved by dragging instructions into place. HOW IT WORKS Program your robot with a small set of building blocks: move forward, turn left, turn right, paint a tile, and call one of five subroutines (F1–F5). Any instruction can be conditioned on the color of the tile the robot is standing on, so a handful of slots can express surprisingly deep logic. Run your program step-by-step or at full speed, and iterate until every star is collected. CAMPAIGN + COMMUNITY PUZZLES Work through a curated Campaign of puzzles from Robozzle's original creators, sorted by difficulty from your first steps to genuine head-scratchers. Or dive into Community Puzzles — the full catalog, searchable and sortable, with ratings from other players. BUILD YOUR OWN Design and publish your own puzzles with the built-in puzzle editor. Lay out the grid, place stars and colored tiles, test your solution, then share it with the community. TRACK YOUR PROGRESS Sign in with Apple to claim a pseudonym, appear on the global Leaderboard, and rate the puzzles you play. Earn points for every puzzle you solve, and pick up right where you left off — your progress is saved automatically. NEW TO ROBOZZLE? Start with the in-app Tutorials, a short series of levels that introduce each instruction one at a time. Robozzle is an original game by Igor Ostrovsky and other contributors (robozzle.com). Robozzle Reboot is a fresh implementation, built with the original author's agreement.