Sky Mesa puts you back in the shoes of Gordon Freeman. Sky Mesa is a little map pack for half life that has 4 new playable maps. There are no new weapons nor enemies in this mod. (There are some new textures though.) Just the same ol'half life weapons. There is however, a cameo from an unused HL1 monster.

indie970 says

10/10 - Agree (2) Disagree (3)

A fine half life mod, very entertaining.

Good texturing, interesting level design, game difficulty well balanced.

Can be improved a bit more in some details.

No evident glitches nor crashes during the gameplay. I still play it whenever I have some spare time.

I like it.