Single-player games like UNDECEMBER: 4th Anniversary
Below are 9 single-player Steam games similar to UNDECEMBER: 4th Anniversary, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like UNDECEMBER: 4th Anniversary page.
Ranked picks
- 1

Diablo® IV
Single-player alternative to UNDECEMBER: 4th Anniversary — playable solo, no multiplayer required. Shares Action and Adventure with UNDECEMBER: 4th Anniversary.
Join the fight for Sanctuary in Diablo® IV, the ultimate action RPG adventure. Experience the critically acclaimed campaign and new seasonal content.
- 2

Path of Exile
Single-player alternative to UNDECEMBER: 4th Anniversary — playable solo, no multiplayer required. Shares Action and Adventure with UNDECEMBER: 4th Anniversary.
You are an Exile, struggling to survive on the dark continent of Wraeclast, as you fight to earn power that will allow you to exact your revenge against those who wronged you. Path of Exile is an online Action RPG set in a dark fantasy world. The game is completely free and will never be pay-to-win.
- 3

Torchlight: Infinite
Single-player alternative to UNDECEMBER: 4th Anniversary — playable solo, no multiplayer required. Shares Action and Adventure with UNDECEMBER: 4th Anniversary.
The fate of Ember Technology is in your hands. With abounding hero build possibilities, dive into an epic journey with endless loot, adrenaline-pumping fights & new seasonal contents.
- 4

Last Epoch
Single-player alternative to UNDECEMBER: 4th Anniversary — playable solo, no multiplayer required. Shares Action and Adventure with UNDECEMBER: 4th Anniversary.
Uncover the Past, Reforge the Future. Ascend into one of 15 mastery classes and explore dangerous dungeons, hunt epic loot, craft legendary weapons, and wield the power of over a hundred transformative skill trees. Last Epoch is being developed by a team of passionate Action RPG enthusiasts.
- 5

Nioh: Complete Edition
Single-player alternative to UNDECEMBER: 4th Anniversary — playable solo, no multiplayer required. Shares Action and RPG with UNDECEMBER: 4th Anniversary.
Ready to die? Experience the newest brutal action game from Team NINJA and Koei Tecmo Games. In the age of samurai, a lone traveler lands on the shores of Japan. He must fight his way through the vicious warriors and supernatural Yokai that infest the land in order to find that which he seeks.
- 6

Grim Dawn
Single-player alternative to UNDECEMBER: 4th Anniversary — playable solo, no multiplayer required. Shares Action and Adventure with UNDECEMBER: 4th Anniversary.
Enter an apocalyptic fantasy world where humanity is on the brink of extinction, iron is valued above gold and trust is hard earned. This ARPG features complex character development, hundreds of unique items, crafting and quests with choice & consequence.
- 7

Two Worlds Epic Edition
Single-player alternative to UNDECEMBER: 4th Anniversary — playable solo, no multiplayer required. Shares RPG with UNDECEMBER: 4th Anniversary.
... 300 years after Aziraal has been banished, a brother and sister are drawn into the conflict which has flared up between the Orcs and the free world. Kyra, the hero's younger sister, suddenly disappears in mysterious circumstances.«...If my family really belongs to the chosen ones, why then have we always been as poor as church mice?
- 8

The Incredible Adventures of Van Helsing
Single-player alternative to UNDECEMBER: 4th Anniversary — playable solo, no multiplayer required. Shares Action and Adventure with UNDECEMBER: 4th Anniversary.
Put on your wide-brimmed hat, grab your weapons and embark on an incredible adventure in the gothic-noir world of Borgovia, where mad science threatens the fragile peace between monster and mortal.
- 9

Path of Exile 2
Single-player alternative to UNDECEMBER: 4th Anniversary — playable solo, no multiplayer required. Shares Action and Adventure with UNDECEMBER: 4th Anniversary.
Path of Exile 2 is a next generation Action RPG from Grinding Gear Games, featuring co-op for up to six players. Set years after the original Path of Exile, you will return to the dark world of Wraeclast and seek to end the corruption that is spreading.