On the Maemo users list — questions that aren’t about the development of new apps or using the developer tools Nokia has made available — Marcelo Oliveira wrote about the version of Doom we’ve seen running on the 770:

We are just finishing the multiplayer support for it ( wi-fi) and we will
publish the game and full source code (GPL as the original doom). This week for sure the packages will linked on the wiki, and at our site:
www.indt.org.br/maemo

We are also just waiting for the final sdk, to place versions for it online.

PS : not only Doom, but some other games =)

Obviously Freakman is not the only one waiting.