Tribes: Vengeance's campaign story is basically one giant tutorial (and a great one at that) on how you move and play in multiplayer.
Too bad that the game didn't take off at all back then, now there's just small communities that get together once in a while :l
russian government and entities closer to it would use MyOffice (МойОфис). But usually russian organizations can choose any foss solution: LibreOffice, OpenOffice and, of course, OnlyOffice.
I've recently switched to kubuntu and one of the games that didn't work well was vermintide 2. Curiously, their next game, darktide, works fine :V
King, who makes candy crush and other mobile games
The only problem is that signal is banned in Russia.