There are some really good ones out there. Theres a lot of old school console RPGs out there like Fantasy Warrior Good/Evil (evil is really good). Quest for Fantasy (I think - theres a couple).
Theres also the settlers alike Townsmen.
Theres also the Doom RPG, which rocks totally.
Mostly its the RPGs which can be really good, and I think some strategy games can work. Reaction-games like shooters and puzzlers can suck quickly, the controls are too fiddly for it.