The Addams Family: A standard issue platformer. The full version seems a bit more complex than what I originally played on the Amiga demo; although it could simply because you could choose which sections of the mansion you would like to complete first.
Alfred Chicken: Another standard issue platformer. The only task is to actually finish this game, which is made a bit easier by finalizing some tactics.
Angband: A simple roguelike, and an obvious favorite for munchkins. It's more of a marathon game rather than seeing how long you can survive - teh game is based around harvesting magical items as you progress deeper into the dungeons.
Aquaria: This was picked up at a few of the humble bundles. Everything above the abyss seems to be complete,
At the Carnival: A puzzle game written by someone who really doesn't like carnivals.
Batman: This is one of the better NES games. While difficult, it is still accessible enough because of unlimited continues, which lets players get better practice on sections that are difficult rather than forcing them to the beginning.
Bombing Room: This is a platform game, wher you need to collect all green orbs on a given level. However, the levels could leave something to be desired, considering that there is a strict time limit for them, that requires strict planning.
Canabalt; highest score was around 7500. Don't think I'll beat that for a while.
Metro 2033: Started this game on Ranger Mode Hard. While noticably difficult, it doesn't seem that hard compared to Doom's nightmare mode (as was implied by the "you will die" message when selecting that difficulty.)
Pathways: Standard art game, intended to give a story rather than a
X-COM: Terror from the Deep: Reached Lobstermen, and they are currently attacking a cruise ship (where I cheated just to see in which of the 1x1 rooms they were hiding in). In this game, I'm considering restarting just to ensure that the solders have better stats, now that I know how the stats work.