There are currently 2 Steam Rico servers

[kermit]

if you liked hl single-player, you will enjoy opposing force sp. it's really good...almost as good as hl itself. the multi-player part of opp-for is just like hldm but has the extra-weapons and character models found in the sp game.

i never played dod before, but i chose not to install/update it through steam at this time. i'm sure it's pretty good, but damn...i'm so busy, i don't want to choose now to get addicted. the only games i did install/update were hl, ricochet and opp-for.