Sid Meier's Alpha Centauri - Trailer

As a seminal 1999 turn-based strategy simulator, you explore the alien planet Chiron after leaving Earth, guiding one of seven ideological factions. The core loop involves exploration, technological discovery (over 75 technologies), empire building with 60+ base upgrades, and conflict. Its most distinctive feature is deep unit customization, allowing players to design war machines from over 32,000 possible configurations. Available on PC, Mac, and Linux.