How many Double Dragon games are there for NES?
3
2
2
2
3
2
3
2
3
2
3
2
3
2
1
3
2
1
3
4
2
1
3
4
2
1
3
4
2
1
5
3
4
2
1
5
3
4
2
1
5
3
4
2
1
5
3
4
2
1
5
3
4
2
1
5
3
4
2
1
5
3
4
2
1
5
3
4
2
1
5
3
4
1
5
3
4
6
0
1
5
3
4
6
1
5
7
4
6
1
5
7
4
6
1
5
7
4
6
1
5
7
4
6
1
5
7
4
6
8
5
7
4
6
8
5
7
6
8
5
7
6
8
5
7
6
8
7
6
9
8
7
6
9
8
7
6
9
8
7
6
9
8
7
6
10
9
8
7
11
6
10
9
8
7
11
6
10
9
8
7
11
6
10
9
8
7
11
13
6
10
9
8
7
11
13
10
9
8
12
7
11
13
10
9
8
12
11
13
10
9
8
12
11
66
62
256
132
61
63