First Person Tennis is the first tennis simulator developed for VR.
Play on a real tennis court and face professional tennis players. Show all your technical and tactical skills to climb the ranking.
MTG Duelist is a free software for playing Magic: The Gathering online.
MTG Duelist simulates a paper Magic match. Use the integrated voice chat to speak to your opponent and declare attackers, phases, targets, etc.
The client also provides a single-player mode, which allows users to test the decks offline.