Warehouse Panic
The only thing that is completed. :P It's open source, on Google Code (SVN)
Worked on this with 
u9 and mr_glasses for the PACC.
Falling Blocks
(The cursor is from my computer, not in-game. :P)
Farming Game
Working on this with 
Kake_fisk. Source code (if it stays open source?) at GitHub.
IRC Client/Bot (Framework)
I've done two iterations of this. #1, the code is really messy, but the bot is very feature filled, since I went a little crazy. :P
#2 was/is a lot cleaner, but doesn't have as much done yet. It has a (terrible) GUI, though.
Both did some multi-threading, although #2 is more thread-safe, and probably more efficient. #1 has some support (although glitchy) for scripting via AngelScript, and #2 is definitely going to have it, although not implemented yet.
Eternal World Online
This was/is mr_glasses' (and a couple of other people there) game, made in Game Maker. They were having problems with finding a place for running a server, so I was going to run it on mine. WINE was working terribly slow, though, plus there were a bunch of useless hoops to jump through to get it working. So, we've ended up recoding the whole server in C++. :)
I kinda want to do the client, too. But let's get the server done, first. :P
Minecraft Clone
I've worked on this several times, in different projects. #1 didn't get far. #2 got to some rendering and cameras. #3 is going to be 2D, and is my latest attempt. The code structure is designed for multiplayer AND modding.
Cat Game
This was for the Riot Digital Tag-Team Competition. I got bored with it, though.
Platformer Creator
This is REALLY old. Made in GM, haven't bothered to make V2 (which would be much better! :P) in C++.
Misc
I've also made a mapper for a game called Terraria, and done a lot of IM-related automations for my Mom.
I've made an XML parser, and a little library with a bunch of utility stuff I semi-frequently remake.
I've also forked SFML and made some changes of my own, most significantly a port to the GP2X Wiz (which is semi-broken).
