S	M	T	W	T	F	S
	1	2	3
4	5	6	7	8	9	10
11	12	13	14	15	16	17
18	19	20	21	22	23	24
25	26	27	28	29	30

S	M	T	W	T	F	S
	1
2	3	4	5	6	7	8
9	10	11	12	13	14	15
16	17	18	19	20	21	22
23	24	25	26	27	28	29
30	31

S	M	T	W	T	F	S
	1	2	3	4	5
6	7	8	9	10	11	12
13	14	15	16	17	18	19
20	21	22	23	24	25	26
27	28	29	30	31

S	M	T	W	T	F	S
	1	2
3	4	5	6	7	8	9
10	11	12	13	14	15	16
17	18	19	20	21	22	23
24	25	26	27	28	29	30

S	M	T	W	T	F	S
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30	31

Timeline

Get Some

Wow. This one isn't new... again, it's a 1997 Conahan production that never made it into the archives... but wow. It's a training package... bobs are replaced with (damn good) pistol shooting marines, troopers are replaced with shotgun-toting marines, and cyborgs are replaced with missile-shooting marines.

Industrial Strength (M2) (revised)

One side is full of canyons and ledges, the other side is a fortress. Between them is a lava river that serves more than one purpose. This map is really pretty to look at, but if you play it with aliens on, you'll never get to see that... revised version fixes smearing, tweaks ammo. This was fixed three years ago, but never made it into the archives.

The Core (G4 or better) v0.9

This is a large circular arena, with grandstand-like steps around the edges, a towering, climbable hill in the center, and some tunnels for navigation.