Why is this an awesome homebrew (my biased opinion here folks).
There is Japanese Akari
http://www.hudson.co.jp/puzzle/akari/
0923 - Puzzle Series Volume 12 - Akari
which has 300 puzzles to do. I'm at around 160 myself.

But PuzzleManiak LightUp game (same as Akari) has unlimited random puzzles that are generate on-the-fly with you choosing 7x7, 10x10, 14x14 size and a difficulty level of easy, medium, or hard.

Bridges is my 2nd favorite game after this as has not yet been put on the Nintendo DS
http://www.nikoli.co.jp/en/puzzles/hashiwokakero/

Also is Tents, Mines (minesweeper) and Pattern (Picross).

In the computer puzzle collection they also have slitherlink but one would hard pressed to do better than the interface of the official slitherlink title
0678 - Puzzle Series Volume 5 - Slither Link
http://www.hudson.co.jp/puzzle/slitherlink/

Anyway this is one of my favorite homebrews for sure.