Single-player games like Mothiary
Below are 9 single-player Steam games similar to Mothiary, 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 Mothiary page.
Ranked picks
- 1
Whimsy Koi
Single-player alternative to Mothiary — playable solo, no multiplayer required. Shares Simulation with Mothiary.
Whimsy Koi is a cozy idle game where you manage calming koi ponds. Collect various whimsical koi fish and decorate your ponds however you want. Just relax and enjoy the tranquil experience.
- 2
Lepidarium
Single-player alternative to Mothiary — playable solo, no multiplayer required. Shares Simulation and Casual with Mothiary.
Relax and collect hundreds of unique butterflies and moths in this cozy idle game. Watch caterpillars transform from larva to chrysalis to winged beauty, customize lush greenhouses, and discover rare species from monarchs to atlas moths.
- 3
Tiny Egg Clicker
Single-player alternative to Mothiary — playable solo, no multiplayer required. Shares Simulation and Casual with Mothiary.
An idle pet-collecting clicker game that keeps you company at the bottom of your screen. Click your egg to help it hatch. Grow your collection of pets to unlock upgrades and rarer eggs. Relax to chill Lofi music while you play at your own pace. Will you hatch the shiny variant of each pet?
- 4
Molluscarium
Single-player alternative to Mothiary — playable solo, no multiplayer required. Shares Simulation and Casual with Mothiary.
Relax and collect over 500 unique molluscs in this cozy idle game. Watch larvae grow into stunning adults in real-time, customize vibrant aquatic habitats across 9 themed packs, and discover rare species from garden snails to deep-sea cephalopods.
- 5
Amphibarium
Single-player alternative to Mothiary — playable solo, no multiplayer required. Shares Simulation and Casual with Mothiary.
Relax and collect hundreds of unique frogs and salamanders in this cozy idle game. Watch tadpoles undergo metamorphosis in real-time, customize lush terrariums, and discover rare species. Let your vivarium thrive in the background while you work or study. Start your collection today!
- 6
Working Class Monsters
Single-player alternative to Mothiary — playable solo, no multiplayer required. Shares Simulation and Casual with Mothiary.
Open packs. Collect monsters. Watch the gold pile up. A cozy incremental about a monster workforce - place goblins, undead, and abyssal horrors across tiles where the right neighbors mean bigger payouts. Grow your sleepy island into a gold printing empire and unlock hidden islands to settle on.
- 7
Pocket Dinos
Single-player alternative to Mothiary — playable solo, no multiplayer required. Shares Simulation and Casual with Mothiary.
An incremental dino collection game where prehistoric stickers come to life. Hatch eggs, discover unique variants, build thriving habitats, and uncover powerful combinations to grow your fortune.
- 8
Wing Haven
Single-player alternative to Mothiary — playable solo, no multiplayer required. Shares Simulation and Casual with Mothiary.
Wing Haven is a relaxing idle game about building cozy bird sanctuaries. Collect rare and exotic feathered friends, give them plant shelter, and watch them grow in real-time! Progress from a basic enclosure to a beautiful nature preserve in old-growth forest, desert oasis, or wetland climates!
- 9
Volt Ventures Idle
Single-player alternative to Mothiary — playable solo, no multiplayer required. Shares Simulation and Casual with Mothiary.
An idle game of growth and strategy. Build, upgrade, and prestige your way to limitless power.