Ill start.
Natural Selection 2
(http://cloud.steampowered.com/ugc/614973792595661967/EAF7B3474DE8AC6F3A3B12D9DC7D421B79014F0C/)
(http://cloud-2.steampowered.com/ugc/614973792595661298/EEDA2F968820A3A6F8D933D01395785049224105/)
(http://cloud-2.steampowered.com/ugc/487752257711203994/2E7464427162561AE538AD8A987B515975B5593E/)
Counter-Strike Global Offensive
(http://cloud.steampowered.com/ugc/920113049602026141/7306E86FA540055C94C811DB50B7B44F6CC96FAF/)
(http://cloud.steampowered.com/ugc/920113049602022117/50E199F8E2D2137A5A0F20B11EBCDDCB581B626B/)
(http://cloud.steampowered.com/ugc/920113049603403621/CDFDAECFE08229F6A32E7BAF8648104E9C97EB8F/)
Company of Heroes
(http://cloud.steampowered.com/ugc/487752804841553243/C8DF7D95236DB59CD9F92E9147F8A892DA348A15/)
Half Life 2 Episode 2
It's amazing how good source still looks so good after all these years.
(http://cloud-2.steampowered.com/ugc/558664199005769707/4E6F8E5FAC455C5355A32BAE187B515D41879244/)