One month ago, Star-ship union find an asteroid with many historical remains near the SiTan galaxy. One after another, treasure-hunters arrive this ruin star and search the treasure by the loading of symbols on remains' wall. Now, it's time for you to show up. Players take a role of treasure-hunters. following the guide of map and racing to the finish first. In the Ruinstar, draft randomly map-cards forming the race track, namely the map in current game. Also, players will take their own meeples and put them on the origin of map. During the game, players draft cards on the center and play them from hands on the front of themselves, acting as a their own exploration-cards colunm. Then, that player can get some symbols on the cards played by him and may use these symbols for other actions,such as destroy others' exploration-cards column or extra advance his/her meeple. It's the most important and interesting that how to prevent others' plan and use your own symbols for advance on the map with Combos.