Chasing down clues to stop Loki's plans, Iron Man and Groot find themselves on Spider-Island and are surrounded by...eight-legged spider people everywhere, in this season two episode of Marvel Battleworld, "An Island of Spiders."
Season two, Mystery of the Treachery at Twilight, finds Loki working to help Thanos retrieve his infinity gauntlet.
Marvel Battleworld is an animated web series based on various Marvel comics and concepts, promoting the collectible tabletop game developed by Funko.
In the season one of series, Mystery of the Thanosstones, Thanos kidnaps heroes and villains from around the Marvel Universe and carries them to to the Battleworld, a planet made up of similarly transported cities and places. There the heroes and villains must battle to be free.
The series initially ran on Marvel HQ and Disney XD.

