Combo! = Combo Attack * Magic Effect
1. Variety of magic effects: magic blocks are very helpful in the game. Besides generation randomly, you can also get them for prize by cleaning multi-line "continuously" or "at once". The more lines you clean, the more powerful you get.
2. Score system: Combo! encourages you to clean multi-line "at once" or "continuously" as possible as you can to get numerous score. The more times you clean continuously, the more score you get.
3. Pleasant sensation of combo attack: an active magic can cause another magic active, this also makes score more and more.
4. The game difficulty has 9 levels. As difficulty increases, there might be some surprising magic showing.
5. Leaderboard let you compete other players all over the world.