Freeciv

Freeciv is an open-source empire-building strategy game inspired by Civilization. Start in prehistory and lead your people through the ages.

• Category Strategy
• Phone? 📱? Might work on a phone Strategy game, phone support unclear
• Plays on play.freeciv.org
• Based on Civilization
• Heads up Free, multiplayer

The game opens on its maker's website in a new tab. MegaClip just points you there.