Nuclear Throne - Post-apocalyptic roguelike-like top-down shooter about mutants.
Stork.ai - AI-Based Collaboration for Hybrid Teams. Rich media messaging, advanced video and voice conferencing, auto-transcribing and screen sharing. Serendipitous meetings at the water-cooler with your human and AI teammates.
Enter the Gungeon - Enter the Gungeon is a gunfight dungeon crawler following a band of misfits seeking to shoot, loot, dodge roll and table-flip their way to personal absolution by reaching the legendary Gungeon’s ultimate treasure: the gun that can kill the past.
Ring4 Meeting - Dead simple video conferencing - free, in browser
EVE Online - Player-created empires, player-driven markets, and endless ways to embark on your personal sci-fi adventure.
Suttna - Keep every team member in the loop