How many games were in the original Halo series?
3
3
3
3
3
3
3
3
3
3
4
2
3
4
5
2
3
4
5
2
3
4
5
2
3
4
5
2
3
4
5
2
3
4
5
2
3
4
5
2
3
4
5
2
3
4
5
2
3
4
1
5
2
6
3
7
4
1
5
2
6
7
4
1
5
2
6
7
4
1
5
2
6
7
4
1
5
2
6
7
4
1
5
2
6
7
4
1
5
2
6
7
4
1
5
8
2
6
7
4
1
5
8
2
6
7
4
1
5
9
8
2
6
7
1
5
9
8
6
7
1
9
8
10
6
7
1
9
11
8
10
6
7
1
9
11
8
10
6
7
1
9
11
8
10
6
7
1
9
11
8
10
6
7
1
9
11
8
10
13
6
7
1
9
11
8
12
10
13
6
16
7
1
9
11
8
12
10
13
6
16
7
1
9
11
8
12
10
13
6
16
7
9
11
8
12
10
13
3 games
3 games
112