Gameplay 7/10. It lives up to the name of Double Dragon. Gets a bit repetitive though.

Graphics 10/10. The graphics really shows what games are capable of for calculators. There are plenty of good games out there that if they had this sort of graphics they would excel. People don't look so great but that isn't important.

Fun 9/10. Fun is different from gameplay in that, no-matter how simple or complex the game is, you keep playing it. This game will keep you button mashing until either the guy next to you takes it to play or the teacher confiscates it.

Replay Value 8/10. Never hurts to get back to kicking and punching.

Overall 9.5/10. This game is great, you will want it on your calculator. However the creator could make it a little more interesting, talk scenes before boss fights and such.

Things to improve. If possible, better character art, making the area smaller so the characters are bigger and more detailed wouldn't be terrible. Closet of weapons, like throwing knives or baseball bat. Indication on being hit or hitting the enemy.