How many mainline Super Mario Brothers games were released on the original NES?
3
2
3
2
3
2
3
2
3
2
3
2
3
2
3
2
4
3
2
4
3
2
4
3
2
4
1
5
3
2
4
1
5
3
2
4
1
5
3
2
4
1
5
3
2
4
1
5
3
2
4
1
5
3
2
4
1
5
3
2
4
1
5
3
2
4
1
5
3
2
4
1
5
3
4
1
5
4
1
5
6
4
1
5
7
6
4
1
5
7
6
4
1
5
7
6
4
1
5
7
6
4
1
5
7
6
1
5
7
6
1
5
7
8
6
1
5
7
8
6
7
8
6
7
8
6
9
7
8
6
9
7
8
6
9
7
8
6
9
7
8
6
9
7
8
6
9
7
8
10
6
11
9
7
8
10
6
11
9
7
8
10
6
11
9
7
13
8
10
6
11
9
7
13
8
10
11
9
13
8
10
11
9
13
8
10
11
12
9
13
8
10
11
12
9
112
128
128
3.
4 games
3000