Probably not enough Linux-compatible, open source games to have a list, otherwise 
. It's not a very competitive market.
There are certainly a heck of a lot more than this list represents, and more current ones at that. I guess it just seems like a half-baked attempt to me, like somebody opened up their package manager and picked the first couple dozen games they saw (some of which are quite good; don't get me wrong), rather than doing any internet digging for the real gems. I suppose those would likely be the most popular ones, since a lot of Linux users presumably find games to play using that same technique, but it says little about how good any of the games are. Missing are Tales of Maj'Eyal, FreeOrion, Endless Sky, and OpenRA for example. OpenMW is open source but doesn't ship with its own assets (being an engine clone of a proprietary game), so whether or not it should be included depends on their criteria. Hmm... time to head on over to Off Topic, I think.
