Single-player games like Summum Aeterna
Below are 13 single-player Steam games similar to Summum Aeterna, 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 Summum Aeterna page.
Ranked picks
- 1

Dead Cells
Single-player alternative to Summum Aeterna — playable solo, no multiplayer required. Shares Action and Indie with Summum Aeterna.
Dead Cells is a roguelite, metroidvania inspired, action-platformer. You'll explore a sprawling, ever-changing castle... assuming you’re able to fight your way past its keepers in 2D souls-lite combat. No checkpoints. Kill, die, learn, repeat.
- 2

Dunjungle
Single-player alternative to Summum Aeterna — playable solo, no multiplayer required. Shares Action and Indie with Summum Aeterna.
A 2d action-packed roguelite about a monkey hero protecting the jungle from the rise of a corruptive power. Explore ever-changing dungeons, fight weird enemies and gear up with lots of weapons and relics you can combine for a new experience every run. Explore, fight, die, and repeat!
- 3

GetsuFumaDen: Undying Moon
Single-player alternative to Summum Aeterna — playable solo, no multiplayer required. Shares Action and Indie with Summum Aeterna.
Death is not the end: defeat infernal foes until you die and carry on the fight with your eternal soul and memories in a new body!
- 4

Ninja Soul
Single-player alternative to Summum Aeterna — playable solo, no multiplayer required. Shares Action and Indie with Summum Aeterna.
Ninjasoul is a platform action game that combines roguelite with Galaxy warrior demon city. Kunoichi, Tachibana Yachiyo unexpectedly awakened the ability of "death backtracking". She will find the truth in the land that used to be her hometown in the fight and death again and again.
- 5

Devil Slayer - Raksasi
Single-player alternative to Summum Aeterna — playable solo, no multiplayer required. Shares Action and Indie with Summum Aeterna.
Devil Slayer - Raksasi is a top-down action game with procedurally generated dungeons, profound roguelike elements, and intuitive soul-like fighting. It's a fair and challenging game, dodging, timing, striking, you need to master them all to fight your way out of this cursed world.
- 6

Seed Hunter 猎源
Single-player alternative to Summum Aeterna — playable solo, no multiplayer required. Shares Action and Indie with Summum Aeterna.
Seed Hunter is a 2D Platformer with Roguelite element. You’re the alien finding the missing source around universe, but you get into some trouble on the planet of Earth.
- 7

ScourgeBringer
Single-player alternative to Summum Aeterna — playable solo, no multiplayer required. Shares Action and Indie with Summum Aeterna.
ScourgeBringer is a fast-paced free-moving roguelite platformer. Help Kyhra to explore the unknown and slash her way through ancient machines guarding the seal of her past, and maybe the redemption of humanity.
- 8

Dreamscaper
Single-player alternative to Summum Aeterna — playable solo, no multiplayer required. Shares Action and Indie with Summum Aeterna.
By night, delve deep into your subconscious and discover powerful artifacts to conquer your nightmares. By day, explore the city of Redhaven and build relationships to unlock the power of your dreams. DREAM. DIE. WAKE. REPEAT.
- 9

Rogue Legacy
Single-player alternative to Summum Aeterna — playable solo, no multiplayer required. Shares Action and Indie with Summum Aeterna.
Rogue Legacy is a genealogical rogue-"LITE" where anyone can be a hero. Each time you die, your child will succeed you. Every child is unique. One child might be colorblind, another might be a dwarf with vertigo. But that's OK, because no one is perfect, and you don't have to be to succeed.
- 10

Hades
Single-player alternative to Summum Aeterna — playable solo, no multiplayer required. Shares Action and Indie with Summum Aeterna.
Defy the god of the dead as you hack and slash out of the Underworld in this rogue-like dungeon crawler from the creators of Bastion, Transistor, and Pyre.
- 11

Aeterna Noctis
Single-player alternative to Summum Aeterna — playable solo, no multiplayer required. Shares Action and Indie with Summum Aeterna.
Aeterna Noctis is a challenging metroidvania that majestically combines action, exploration and adventure. With 2 game modes and difficulty based on action or the exclusive Noctis mode where a level of difficulty is added in precision platforming never seen in the metroidvania genre.
- 12

Eden Genesis
Single-player alternative to Summum Aeterna — playable solo, no multiplayer required. Shares Action and Adventure with Summum Aeterna.
Help Leah overcome a serious illness caused by her cybernetic implants. In this a platformer from the creators of Aeterna Noctis, you will face hundreds of challenges and secrets that unravel the mystery of Eden Genesis. Live this Cyberpunk 2D adventure.
- 13

Genesis Survivors
Single-player alternative to Summum Aeterna — playable solo, no multiplayer required. Shares Action and Indie with Summum Aeterna.
Welcome, hackers, you're being transferred to Eden City to defend its citizens against the alien threat! Eden Survivors is a single-player survivor-like auto-shooter where players must defeat hordes of alien invaders until the extraction time.