1. It's a game that wants you to play it
2. It forces you to think
3. The whole game is colorful and beautiful artistically with inspired designs
4. Every level is themed and unique
5. Every enemy is different in appearance and behavior
6. You can go from being puny to being unbelievably strong and then losing it all in a span of 45 seconds
7. It can be beaten in an hour if you know what you're doing
8. It's simple in its controls and design