In August 2012, Rovio celebrated the successful red planet landing of NASA's Curiosity rover by putting out this batch of 20 Mars-themed levels. The planet, not the chocolate bar.
Each level is set on Mars, and features giant steam vents that can push birds, pigs, and other such detritus with tremendous force. Watch out for those, or work them into your pig-killing strategy.
You'll also come across famous planetary rovers of time gone by, like Viking and Opportunity. Find out more about those on our Golden Eggsteroid page.
Stuck on any level? We've collected guides for every stage, so just watch the videos below to find out how to beat each level, and how to earn that all-important three-star ranking.