How many games are in the Halo series and have master chief as a playable character?
6
3
3
3
3
3
3
3
5
3
5
3
5
2
3
4
5
2
3
4
5
2
3
4
5
1
2
6
3
4
5
1
2
6
3
4
5
1
2
6
3
4
5
1
2
6
7
3
4
5
1
2
6
7
3
4
5
1
2
6
7
3
4
5
1
2
6
7
3
4
5
0
1
2
6
7
8
3
4
5
1
2
0
6
7
8
4
5
1
2
6
7
0
8
4
5
1
2
6
7
8
4
5
0
1
2
6
7
8
4
5
1
2
6
7
8
9
4
5
1
2
6
7
8
9
4
5
1
2
6
7
8
9
4
1
2
6
7
8
9
4
1
2
6
7
8
9
4
10
1
6
7
8
9
10
1
6
7
8
9
10
1
6
7
8
9
11
10
7
8
9
11
10
7
8
9
11
10
13
7
8
9
11
10
13
8
9
11
12
10
13
8
9
11
12
10
13
8
ten
ten
ten