Herg's Solitaire 1.0

Considered one of the top GBA homebrew programs, included in the download are the optional backgrounds and cards modifying programs.

Klondike
Freecell
Tripeaks
Pyramid
King's Corner
Yukon
Scorpion
Aces Up
Golf
Canfield
Spider
Double Freecell
Sir Tommy
Carpet
Stonewall
Cruel
Montana*
Topsy Turvy Queens

*Montana written by SmileyDude