Advance Wars Classic
The Matrix has 38 strategy games on file for the Game Boy Advance, released between 2001–2006. 23 of them support multiplayer. They're ranked below by legacy score, so the games that shaped the genre on the GBA come first, with lesser-known picks further down.
Strategy games reward planning over reflexes: command armies, manage resources and outthink opponents on turn-based or real-time battlefields.
Typical commitment: weekend project (roughly 6–20 hours). Tip: Read the manual or tutorial if one exists: retro strategy games often assume you know their rules. Save between missions.