Clash Royale from Supercell (Makers of Clash of Clans, Boom Beach, Hay Day)
3 minutes of fast-paced and fierce PvP card-style game.
Terraria
Basically a 2D platformer inspired by Minecraft.
PC / Mac
Diablo III (Playing Now)
One of my all-time fave adventure games. Non-stop action, easy play, fun to find treasures and defeat monsters.
Freespace 2
Space combat sim with a fantastic story and unmatched graphics in its time.
StarCraft
Fave Real Time Strategy (RTS) game of all time. Loved playing Terrans and Protoss the most.
Overwatch
Also from Blizzard (Makers of World of Warcraft, StarCraft, Diablo)
Ori and the Blind Forest
Engaging and challenging platformer - similar to Little Big Planet on PS3
Ultima!
The first role-playing / adventure video game I played on the Apple II. Routinely escaped to the Lands of Lord British!