Extreme Exorcism will have a fairly broad appeal, given the simplicity of the mechanics. You'll likely need to explain to your non-gaming friends how it works, but even the most staunch luddites will be able to grasp what's going on.
The cartoony appearance might throw you off, but there's no shortage of violence in this retelling of a folk legend's homegrown rebellion.
The Elder Scrolls Online is a ton of fun in an outside-the-box sort of way. It can't seem to decide whether it wants to be single player or MMO, so be prepared for some in-between weirdness, but nothing that really detracts much from the experience. Between Guilds, crafting, PvP, and dungeons, it has all of the makings of a solid MMO.
Leap of Fate offers a challenging rogue-lite experience without making it unapproachable to less serious gamers. The combination of unique characters, randomized skill trees, and an abundance of interesting Glyph effects makes every run feel like a different game.
Arrowhead made a very true-to-source Gauntlet game, no doubt, but the source is 30 years old, and could use some modern accouterments. Gauntlet is as much fun as it has ever been, but it'll get old fast for those who still remember slogging through the original.
Killer Instinct is definitely fun, if a bit lacking in depth. The lack of campaign mode and limited character options mean it won't take long for you to breeze through the entirety of the content offering, but the online versus should ensure that you get plenty of enjoyment for your investment.
Ryse: Son of Rome is a wonderful experience. The simple, yet always dynamic combat is how it really sinks its teeth into you. By the time you really get hooked, though, the game will be over, and you'll be left wanting more.
Enter the Gungeon is an exhilarating experience, but the difficulty often comes from the game refusing to provide you the necessary tools, which offers its own unique challenges.
Puzzle fanatics will enjoy it, even in solo mode. Players looking for some widely-appealing games to play with non-gamer family and friends will definitely find value here, and may discover they're no longer the best player in the room.
EA Sports UFC doesn't cater to button mashers, so be wary if you're not eager to learn an overly-complex control scheme. More technical gamers will be able to appreciate the gameplay to a greater extent, but the laggy servers make even this an exercise in frustration.