MDL version
Games using the version
11-26
unknown
27
Half-Life 2 beta leak
28
Half-Life 2 beta leak
29
Half-Life 2 beta leak
30
Half-Life 2 beta leak
31
Half-Life 2 beta leak
32
Half-Life 2 beta leak
33-34
35
Half-Life 2 beta leak
36
Half-Life 2 beta leak
37
Half-Life 2 beta leak
38
Half-Life 2 beta leak
39-43
44
Half-Life 2
45
46
47
48
Team Fortress 2
unknown
unknown