Undertale

Undertale is a 2015 roleplaying game by Toby Fox. The game features bullet hell combat mechanics, as well as a feature to spare or subdue opponents instead of killing them, choices which greatly impact the story and gameplay.

Premise
Players control the child who has fallen into the Underground, a large, secluded region under the surface of the Earth, separated by a magic barrier. The player meets various monsters during a quest to return to the surface, mainly through the combat system; the player navigates through mini-bullet hell attacks by the opponent and can opt to pacify or subdue monsters in order to spare them instead of killing them. These choices affect the game, with the dialogue, characters, and story changing based on outcomes.

Undertale and furry
Undertale won the award for "Best Anthropomorphic Game" in the 2015 Ursa Major Awards.

So Sorry
Furry artist Samael backed the game via Kickstarter before its release, earning a character based on his fursona to be included in the game with a $1,000 donation. This character manifested as a hidden miniboss the player can encounter called So Sorry. Toby Fox, with Samael's permission, did tweak the character slightly to avoid association with Samael's own work, some of which is adult in nature.

Other anthropomorphic characters

 * Doggo, Lesser Dog, Greater Dog, Temmie, Dogamy, Doggeressa - anthropomorphic dogs
 * Ice Wolf - anthropomorphic wolf
 * Snowdin shopkeeper, Nicecream Guy - Technicolor Anthropomorphic rabbits
 * Asriel, Asgore and Toriel - Monsters that appear to have features of lions, goats, and rabbits
 * Alphys - reptile
 * Undyne - fish
 * Muffet - spider