Single-player games like Fallen Isekai
Below are 8 single-player Steam games similar to Fallen Isekai, 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 Fallen Isekai page.
Ranked picks
- 1

Noctiria
Single-player alternative to Fallen Isekai — playable solo, no multiplayer required. Shares Strategy and Indie with Fallen Isekai.
A filthy, brutal, and disturbing horror roguelike deckbuilder. Choose your hero, build your deck, combine devastating status effects, and cross Noctiria: a sick urban city where every run drags you deeper.
- 2

All-Front Assault
Single-player alternative to Fallen Isekai — playable solo, no multiplayer required. Shares Strategy and Indie with Fallen Isekai.
When the sky is filled with warplanes, it's time to make these alien bugs tremble! Commander, welcome to Planet Thernas. We look forward to defending our planetary outpost under your command.
- 3

Voice of Belldona
Single-player alternative to Fallen Isekai — playable solo, no multiplayer required. Shares Strategy and Indie with Fallen Isekai.
A sci-fantasy roguelite deckbuilder set in a world collapsing under cosmic instability. To stop the turmoil, humanity created a white-haired, godlike girl with overwhelming power and social anxiety. Enter the Vortex Zone, summon your allies, form your battle line, and tear through the enemy forces.
- 4

Cell Command
Single-player alternative to Fallen Isekai — playable solo, no multiplayer required. Shares Strategy and Indie with Fallen Isekai.
TURN-BASED TACTICS meets SNAKE: A new roguelike in the Genome Guardian universe. SPLICE DNA to create new units, enhance their genetics, and take on the Abyss virus once more in a variety of different modes & match types.
- 5

Handmancers
Single-player alternative to Fallen Isekai — playable solo, no multiplayer required. Shares Strategy and Indie with Fallen Isekai.
Handmancers is a Rock, Paper, Scissors Roguelite deckbuilder with a first-person twist where clear tactical choices meet deck-building depth. Craft your deck, enhance your cards, equip tricky artifacts and face powerful enemies in strategic fights
- 6

Swords and Sandals 3 Redux
Single-player alternative to Fallen Isekai — playable solo, no multiplayer required. Shares Strategy and RPG with Fallen Isekai.
A legend returns! The beloved classic Swords and Sandals 3 is back, re-forged in glory! Step back into the Gladiae Ultratus once more and prepare to take on the greatest gladiators in all Brandor. It's the hardest, most metal gladiator game ever made.
- 7

XenoWorld ~The Rondeau of Astra~
Single-player alternative to Fallen Isekai — playable solo, no multiplayer required. Shares Strategy and Indie with Fallen Isekai.
《異境迷走TRoA》是一款結合戰棋、卡牌和Rogue的戰棋遊戲。你將操控「主戰者」,在一關又一關的迷霧森林中,擊敗所有敵人,並揭開異世界「亞斯特大陸」的秘密......
- 8

Nowhere Prophet
Single-player alternative to Fallen Isekai — playable solo, no multiplayer required. Shares Strategy and Indie with Fallen Isekai.
Prepare your decks and go on a pilgrimage through the wasteland! Nowhere Prophet is a unique single-player card game. Travel across randomly generated maps and lead your followers in deep tactical combat. Discover new cards and build your deck as you explore this strange, broken world.