Rogue Bit

Rogue Bit is a puzzle game about escaping a computer as a single bit of memory. You invade nearby bytes to change their values, then manipulate existing programs and data to clear a path through memory or reach otherwise inaccessible locations.

Navigate memory

You can XOR into adjacent bytes to move through existing data. The game marks bytes you cannot enter without being overwritten and prevents you from moving into them. Binary and ASCII views help you find an open route through each puzzle.

Read and alter programs

Programs run on the computer you are trying to escape. A disassembler displays the assembly language for the machine code being executed, and the game introduces its small set of CPU instructions gradually as you solve puzzles. By tracing the program logic, you can see which parts of RAM it reads and writes, then change data in those locations to influence what it does.

The computer has a simple CPU with a couple of registers. You can trick it into loading you into a register to affect code execution, or move yourself into memory locations you could not otherwise reach. Some puzzles also require changing machine code so the computer behaves differently.

Solve the puzzles

Rogue Bit has about 30 puzzles, some of which may take considerable effort. You observe the bytes and CPU activity, read code directly or trace it backwards from an instruction you want executed to work out how to reach it. Understanding why a solution works can matter for later puzzles.

The game focuses on hacking existing programs and their data, not writing new ones. Programming knowledge can make the puzzles easier, but is not required: the elements needed to solve them are explained in the game. The puzzles involve basic math and are intended for players interested in computer internals, assembly, machine languages and programming.