Late 90s, I worked for small IT consulting firm of like 8 people. We’d support small local professional offices that had no IT staffing; lawyers, outpatient doctors, etc.

Anyway every Friday we’d never schedule any afternoon support calls or visits because we’d always have LAN parties in the afternoon into the early morning and our friends would also come by with their PCs.

We’d play any RTS but Command and Conquer series was our favorite. We’d also play multiplayer FPS like Quake Arena or run through the entire Serious Sam campaign in co-op.

Bonus story. The local CompUSA was shutting down and if the front of the store they had two huge custom octagonal gaming stations/desk that each supported 8 players. We asked how much they wanted for one of the big stations, and they said it was free as long as we removed it ourselves. So we took this huge thing that back to the office and used it in our LAN parties. 8 stools around it. 8 stations for monitors and the enclosed center was for cable management leading to an enclosed bottom half with space for power and the PC. It was glorious.