Unblock the Car is a sliding car park puzzle. Koala is stuck in a toy car park, and cute cars, buses, trucks and friendly logs are in the way. Each one slides only along its own line, so children learn to plan ahead. The first car parks are tiny, with just one or two blocks, and they grow step by step to bigger puzzles that make older children think. Every car park Koala drives out of earns stars, and every stage cleared wins a new colour for Koala's car. There is no timer and no losing: a stuck car just wiggles, and the light bulb shows the next good slide. The places change from a happy farm to a sunny beach, snowy hills, candy land and a starry night.